Helleu Guy's and girls,
is there any chance of mounting bigger tyres than the standard 130? if not wat is the best tyre for roadracing Ime specially interested in short and long corners.
I want grip lots of grip,..
greetings from Brasil.
Peter
roadracing= generally illegal.........are you sure you don't mean track racing ;)
Also, this is the wrong thread to post in for this question........
Moved question to its own thread. :thumb:
And welcome! :cheers:
As far as I know, "road racing" does not refer to racing on public streets. Racing on a closed circuit road course is called road racing.
As to the question, you can get awesome rubber (such as Pirelli Sport Demons) in the stock 130 size. The torque of the GS won't ask for more. However, if you're obsessive like some of us, you can do the Katana wheel swap really easily and get even better rubber.
http://cgi.stanford.edu/~sanjayd/gs500/Upgrades/KatanaRearWheel
I did the swap so I could use Michelin Pilot Powers in 150, and I can't complain. I lit into those tires at the track and they didn't even blink.
Yeah, thought about that later.........it's been a really long day :mad: :mad:
If you don't want to switch out the wheel, the sport demons are probably the best......though some people say you can throw sportec m3's on there with 140 on the back
I'm doing a 6 inch wide TL1000R rear wheel on an 88 GSXR750 swing arm.Plan on running a 200-50-17.I haven't mocked it all up.It's to hot to do anything outside here.
I gotta bandit 600 rear wheel for my daily rider and can run a 160-60-17,but I don't recommend it.I'd stay with a 150-70-17.160 leaves little room.The chain is to close to the tire and the sprocket carrier has to be spaced out,unless you can find a 520 sprocket for the Bandit 600 carrier.They are out there.The other thing is finding the front sprocket with the shoulder on it.That helps to push the chain out some too.
I'm running a Kat wheel, 150 rear. I ordered a 150 pilot power rear, then I found a pilot sport 110 front for $40 on ebay. i ordered it, but I'll probably hold on to it until I collect a matching set, pilot sport rear and front, pilot power rear and front. I am really excited about putting the pilot powers on.
Hello Friends thanx
for all this relevant information, my former bike was a SV 1000 N
so when I bought the 500 I got the shivers when I saw the size of that rear tyer .
so beeing used to lots of rubber Ime affraid I will make some "big" mistakes taking the curves as I used to ( knee on the gound )
greetings from Brasil to you all.
just be carful taking the turns you will start to scrape the side casings before you can get as low as the sv would..
thanx for the information,
Ill be carefull will let it go one turn at the time scratching ground is the limit for me, the SV's limit was far,..
greettings from Brasil
Peter
to answer your original question, yes you can go bigger, I have 140/80-17 rear and 120/80-17 front Avon Av46 & av 45 respectively. and its a great tire for commuting and "twisties" :)
i have a metzeler 140/80/17 rear tire , do i need any modifications to intall this tire?
and if i do install it. the front need to be diferent size too?
Quote from: pester on August 14, 2007, 05:53:28 PM
i have a metzeler 140/80/17 rear tire , do i need any modifications to intall this tire?
and if i do install it. the front need to be diferent size too?
NO
i have a 160 pirelli dragon super corsa on my 90 gs, tons an tons of grip, never slipped a bit on me, but they do wear fast
i would love a wider tire but i don't think i am long for the GS anymore. since i work at a suzuki place i am pretty sure a new bike is in the works before the end of the year
Quote from: pester on August 14, 2007, 05:53:28 PM
i have a metzeler 140/80/17 rear tire , do i need any modifications to intall this tire?
and if i do install it. the front need to be diferent size too?
140/80/17 fits/works good on a GS, I had a 140/80 AV36 on my 97 GS with a 110/70 BT010 front for a while. Also ran a 140/80 AV46 rear with a 110/80 AV45 front on the 02 GS, liked it better.
http://img.photobucket.com/albums/v443/jcp8832/GS500tirelog.jpg
I have a 150/70 RoadAttack rear on my 02 GS right now and it's never slipped in over 8k miles so far.
I have a 150/70 RoadAttack rear on my 02 GS right now and it's never slipped in over 8k miles so far.
Hello 150/70 now we are getting somewere! do I need some adjustments to get it in? does it touch the chain?
Quote from: toyopete on August 17, 2007, 03:41:05 AM
I have a 150/70 RoadAttack rear on my 02 GS right now and it's never slipped in over 8k miles so far.
Hello 150/70 now we are getting somewere! do I need some adjustments to get it in? does it touch the chain?
I ran a 150/70 Lasertec rear for 10k miles that had enough clearance all around on the standard 3.5" rear wheel. The 150/70 RoadAttack is supposed to be the same width but it touched the brake torque rod a bit at times. I went back after a couple thousand miles and bent the brake rod a bit for more clearance. There is enough clearance to the chain and chain guard but the widest of the 150/70 tires would be quite close I think. The new Avon Storm and Bridgestone BT021 tires are about 6 mm wider than the ones I used.
My current 150/70 RoadAttack, it's holding it's shape nicely at 8k miles:
(http://img.photobucket.com/albums/v443/jcp8832/RoadAttack-4.jpg)
Here's a rather poor picture of the RoadAttack clearance to the brake rod after I bent the rod a bit, it just touched before bending:
(http://img.photobucket.com/albums/v443/jcp8832/RoadAttack-3.jpg)
In general, what are the benefits of going radials on a GS?
Quote from: galahs on August 17, 2007, 06:38:26 AM
In general, what are the benefits of going radials on a GS?
better handling and wear
so which is the best radial 150?
Quote from: frankieG on August 17, 2007, 03:53:46 PM
so which is the best radial 150?
They're all quite good now, all the tires in this comparo test except the D220 are available in the 150/70 size:
http://forums.delphiforums.com/motorcycleviews/messages/?msg=681.1
I don't care what they say, the RoadAttack is my current favorite. :laugh:
I wonder why tyre manufacturers don't make smaller sized radial tyres :dunno_white:
nice pics gsjack - that gives a good idea of what to expect wear wise. thx
Quote from: galahs on August 18, 2007, 10:49:05 AM
I wonder why tyre manufacturers don't make smaller sized radial tyres :dunno_white:
There's a lot of 140/70 and 140/60 radial tires on the world market, just not enough volume here.
http://mc.bridgestone.co.jp/en/products/battlax/bt090.html
http://www.irc-tire.com/mce/
They still make a Metz Z2 in the 130/80 size for sale here, I had a couple of them. It's used on the new Bonnies with a Lasertec front.
You can get a Shinko sport radial here in the 140/60 and 150/60 size. Only V speed rated, should be enough for the GS. :laugh:
http://www.tiresunlimited.com/ALL%20TIRES/Shinko/Shinko_podium_hp_radial_006.htm
Wow why have I never heard that Bridgestone have a radial 110/70R17 front and 140/70R17 rear!
Quote
Introducing the new BT-090 for middle size bikes. Refined by using the latest technologies from Bridgestone, the BT-090 is perfect for aggressive riding on both circuit and street. The rigidity of the tyre induces better contact feel in corners, especially for slide control during races. The new compound and pattern offer improved grip and handling in both wet and dry conditions, with better high speed stability and anti-shimmy performance ensuring a smooth ride.
[Compound]
•High grip compound for middle-size class motorcycles. Maintains high grip level from start to finish regardless of the temperature.
[Pattern]
•New pattern optimises both vertical and horizontal rigidity of the tyre. Less grooves on the tread edge for better dry grip and machine control in corner, and more grooves in the centre area for better wet performance.
[Profile and Pattern effect]
•Higher rigidity in sidewall area increases the grip in corners.
•Better slide control for easier "line" tracing. Improved high speed stability and anti shimmy for better street-riding performance.
[Construction]
•MSB Kevlar in rear.
(http://img167.imageshack.us/img167/8485/bt090mk3.jpg)
What would be the benefits and disadvantages of this tyre over a good bias ply tyre like the Pirelli Sports Demons?
Bridgestone also have a BT-92 Sports Touring Radial that should fit, though they recommend it being fit to a 4 inch rim (ours has a 3.5 inch stock) 110/70R17 front and a 140/60R17 or 140/70R17 rear.
Quote
Loaded with mono-spiral belt and DTC technologies, BATTLAX BT-92 is an all round radial tire for mid-size motorcycles with wet performance, riding comfort, and controllability.
[Compound]
•BATTLAX BT-92 compound is balanced to give good dry grip, high speed stability, wear life, and wet performance. DTC technology in rear tire provides both tire life and cornering grip.
[Pattern]
•The high-angled groove in the center tread gives wet performance in straightway and high speed cruising, and the low-angled groove for wet performance in low-mid speed range. The center straight groove in front tire is for straightway stability.
[Profile]
•The large, single crown radius for stability and linear cornering performance.
[Construction]
•BATTLAX BT-92 uses nylon mono-spiral belt for riding comfort and stability.
http://mc.bridgestone.co.jp/en/products/battlax/bt92.html
(http://img489.imageshack.us/img489/9901/bt92oy7.jpg)
I assume this would probably make for a better day to day street tyre than the BT-090?
Tyre Dimensions:
BT-45 (Stock GS500 2004+)
FRONT 110/70-17 = = = Width 106mm - - - Outside Diameter 589mm
REAR 130/70-17 = = = Width 136mm - - - Outside Diameter 617mm
BT-92 Radial
FRONT 110/70R17 = = = Width 110mm - - - Outside Diameter 592mm
REAR 140/60R17 = = = Width 140mm - - - Outside Diameter 602mm
or
REAR 140/70R17 = = = Width 146mm - - - Outside Diameter 632mm
BT-090 Radial
FRONT 110/70R17 = = = Width 111mm - - - Outside Diameter 592mm
REAR 140/70R17 = = = Width 140mm - - - Outside Diameter 627mm
Save the BT090 for the track. A great sticky and soft tire. For me...typically last 2-3 track days, depending on the surface. My front has about 300 miles of track time and may have a 1/2 day left.
So the BT-090 is too soft for normal street use?
My next question about the BT-92. Even though its a 140/70R17 its width slightly larger at 146mm. Would this have clearance issues on the GS?
If so would a better direct swap be the 60 profile of the same tyre?
Quote from: galahs on August 19, 2007, 07:19:03 PM
So the BT-090 is too soft for normal street use?
....
Only if you want to replace them often.
I will eventually use my take-offs on the street since the centers are basically untouched.
Quote from: dgyver on August 19, 2007, 07:24:34 PM
Quote from: galahs on August 19, 2007, 07:19:03 PM
So the BT-090 is too soft for normal street use?
....
Only if you want to replace them often.
I will eventually use my take-offs on the street since the centers are basically untouched.
Bragger :laugh: :laugh:
So why do so little GS riders use or recommend the BT-92?
Is it because its hard to get in the US?
The BT92 and BT090 tires aren't even listed on the Briidgestone US site, the link I showed was for Japan site to show those tires were available on the world market. You can find the BT090 on racing tire sites like this for US:
http://www.barebones.net/tires.htm
http://stickboyracing.com/
Beautifull, nice tires, and 8 k miles is not bad at all,I still have the 130's on it prpbably wait till they are worn a bit more,
I just purchased the bike, its a 2002 with unbelieveble 4700 kilometers on it.
thanx for the info,.
greetings from Brasil
Peter
Another question....
are radial tyres heavier than cross ply tyres? (assuming both are the same size of course)
Quote from: galahs on September 19, 2007, 11:33:14 PM
Another question....
are radial tyres heavier than cross ply tyres? (assuming both are the same size of course)
Radial tires are lighter although I'm sure someone can find an exception. :) Compare tires from the same maker like the BT45 and the BT020 from Bridgestone for example:
http://www.tiresunlimited.com/ALL%20TIRES/Bridgestone/Bridgestone%20MC/bridgestone_battlax_bt45h.htm
http://www.tiresunlimited.com/ALL%20TIRES/Bridgestone/Bridgestone%20MC/bridgestone_battlax_bt020.htm
150/70 size BT45 is 17# and same size BT020 is 14#.
So another benefit of using Radial tyres is less sprung weight. :thumb:
less rotational mass should also equate to improved acceleration and braking.
Quote from: toyopete on August 07, 2007, 06:12:35 AM
...my former bike was a SV 1000 N so when I bought the 500 I got the shivers when I saw the size of that rear tyre .
so beeing used to lots of rubber Ime affraid I will make some "big" mistakes taking the curves as I used to ( knee on the gound ).
remember the SV1k NEEDS more rubber because it has 2x-3x the horsepower of the GS. The 130 is more than capable at most speeds.
Quote from: jordanearl on August 14, 2007, 06:41:51 PM
i have a 160 pirelli dragon super corsa on my 90 gs, tons an tons of grip, never slipped a bit on me, but they do wear fast
had to make ny modification to the standard GS? wheel brakesupport etc.
Quote from: galahs on September 20, 2007, 05:51:38 AM
So another benefit of using Radial tyres is less sprung weight. :thumb:
less rotational mass should also equate to improved acceleration and braking.
that difference might be minimal sinds the GS is a fat pig,..174 kilo fro the GS my SV 1000 was 174 Kilo with 124 hp,...
Quote from: pantablo on September 20, 2007, 10:20:41 AM
Quote from: toyopete on August 07, 2007, 06:12:35 AM
...my former bike was a SV 1000 N so when I bought the 500 I got the shivers when I saw the size of that rear tyre .
so beeing used to lots of rubber Ime affraid I will make some "big" mistakes taking the curves as I used to ( knee on the gound ).
remember the SV1k NEEDS more rubber because it has 2x-3x the horsepower of the GS. The 130 is more than capable at most speeds.
Ime still scared,...
no way, the sv1000 weighs about 23kg more than a gs fully fueled. it's the sv650 that weighs about the same.
Quote from: toyopete on September 20, 2007, 02:11:15 PM
Quote from: galahs on September 20, 2007, 05:51:38 AM
So another benefit of using Radial tyres is less sprung weight. :thumb:
less rotational mass should also equate to improved acceleration and braking.
that difference might be minimal sinds the GS is a fat pig,..174 kilo fro the GS my SV 1000 was 174 Kilo with 124 hp,...
But with such small horse power available every bit counts. :thumb:
Quote from: nazgulnarsil on September 20, 2007, 11:18:23 PM
no way, the sv1000 weighs about 23kg more than a gs fully fueled. it's the sv650 that weighs about the same.
that's correct for the SV Sport, but Ime refering to the naked version...
The small wheel on the rear is just wrong , looks stupid , a 150/ or 160 on a 4.5 helps it
Quote from: Jay_wolf on September 22, 2007, 01:57:11 PM
The small wheel on the rear is just wrong , looks stupid , a 150/ or 160 on a 4.5 helps it
that too,. and a 150 it will be in the near future
So a guy here in town found an 89 gs and works at a bike shop. He promptly threw a michelin pilot on it that was a 160/70/17 and I about crapped. He didn't bend the brake arm, didn't change anything. He just threw it on there and said it was fine. I wanted to know a little more of the problems that can occur with such a large tire on a 3.5" rim. I know the basic it bulges the center out and makes it unstable but a little more info on why and how it does this would be great. Thanks
There is one big Debate about wether a 150 should be put on a 3.5 inch rim , a 160 is way to far
Gs jack rides his gs with a 150 tire on , and i think 8-10k miles , not a single problem and even had a email from the company saying its completely safe to use , I personally have a BT45 150/70/17 on a 3.5 inch katana (1990) rim and it works fine
Until the spacer is sourced it will have to do before i can have 160 on a 4.5 inch rim
Jay
but why is it dangerous????
Quote from: bombadillo on September 22, 2007, 03:08:36 PM
So a guy here in town found an 89 gs and works at a bike shop. He promptly threw a michelin pilot on it that was a 160/70/17 and I about crapped. He didn't bend the brake arm, didn't change anything. He just threw it on there and said it was fine. I wanted to know a little more of the problems that can occur with such a large tire on a 3.5" rim. I know the basic it bulges the center out and makes it unstable but a little more info on why and how it does this would be great. Thanks
Quote from: bombadillo on September 22, 2007, 06:46:20 PM
but why is it dangerous????
Its dangerous because what happens to the tire when on a too-narrow rim. The tire profile changes because you are pinching the beads closer together than they are designed for. This causes the center of the tire to bulge out a bit which reduces your contact patch when bike is vertical (regular street riding). I noticed the biggest difference in braking, where using my rear brake on the 150 would cause it to almost always, easily, lock up.
Also, the pinching of the tire causes the transition from center to edge, like when you are turning, to be abrupt. In fact, on my pilot sport 150's, once they wore a bit that transition became even more abrupt and the bike would feel like it was falling into the turn once I passed a certain lean angle. It was enough to scare the bejeezus out of me.
Not all tires are the same. In fact, you could measure every 150 and they'd all be different. There is one brand/model that is approved for the 3.5 wheel as stated above.
Also, My 150, when on my 3.5 wheel, measured only 142mm, because of the pinching.
Keep in mind that Pablo is talking about a 150/60 Pilot Sport tire which is a supersport type and has since been replaced by the Pilot Power tire. NONE of the tire manufactures recommends the fitment of a 150/60 tire on a 3.5" wide rim in this country and never have as far as I know. Many are running the 150/60 tires on the GS500 and Ninja 500 bikes on 3.5" rims and highly recommend them to others, I have not personally tried a 150/60 size.
Both the 150 tires I have run are the 150/70 sport touring type tires and I've had no problems with them. The 150/70 tires are an approved fitment on the 3.5" rim for the Z6, Strada, BT020, Contiforce, and Road Attack tires to mention ones that come to mind and in cases like the Avon AV45/46 and Storms where they are not generally recommended by Avon for this fitment I have found it recommended by Avon for particular individual fitments in the Avon fitment guide.
I don't ride at the pace Pablo does AND NEVER WILL so it's not a direct comparison, I'm trying to slow down a bit as father time catches up to me. I ran my 150/70 Road Attack for 10k miles and was very happy with it except for the slipping on tar snakes in it's later life that I talked about in another thread about tires with teeth for hot weather. I just replaced it with a 140/70 Avon Roadrider that is performing nicely and think I'll be satisfied with this tire, time will tell as I haven't even got it wet yet. It only cost $80 compared to the $120 for another Road Attack at my local tire place.
Are RoadRiders radials?
Avon Roadriders are bias ply, not radial.
Quote from: gsJack on September 23, 2007, 06:48:20 AM
I don't ride at the pace Pablo does AND NEVER WILL so it's not a direct comparison,
Life is ironic that way...
on another ironic note, I dont even run street tires any more. I run DOT race rubber, specifically the new Diablo Supercorsa. So nice. So sticky. Also, I dont ride on the street anymore, just track riding now once or twice a month.
this is what one trackday looks like on a Supercorsa. mmm boogers.
(http://img.photobucket.com/albums/v505/pantablo/IMG_0992.jpg)