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Main Area => General GS500 Discussion => Topic started by: budget speed demon on April 11, 2006, 11:38:19 AM

Title: Proper scrub in
Post by: budget speed demon on April 11, 2006, 11:38:19 AM
Well along with my new front end, I'm installing a new set of Pirelli Sport Demons. I know when you put new tires on they are very slick and need to be properly 'scrubbed in' before you go to crazy in corners. How many miles does a proper scrub in involve? Is there any specific tricks to doing this?
Title: Re: Proper scrub in
Post by: scratch on April 11, 2006, 12:04:37 PM
Could be 50 to 100 miles.  I find practicing MSF slow parking lot turns the best for scrubbing in the sides of the tires.  Practice counterleaning into the tightest left and right circles, looking over your shoulder, feeling the clutch for the friction zone...
Title: Re: Proper scrub in
Post by: 3imo on April 11, 2006, 12:05:46 PM


+1  thats how I do it.
Title: Re: Proper scrub in
Post by: 94suzuki500 on April 11, 2006, 12:27:10 PM
on my bridgestone it was 150 miles i believe.  i think it said it on the tire sticker.  but i just road easy for 150 miles in the turns and road around my neighborhood for alittle bit hitting all the turns.
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 12:57:51 PM
You'll only scrub in the parts you ride on, so... Slowly work your way towards the edges, but know they they'll be slick when you get to the edge.

Once the hair and shine are gone, they're probably scrubbed in that area.
Title: Re: Proper scrub in
Post by: budget speed demon on April 11, 2006, 01:18:17 PM
I've ridden with somone who just put a new rear tire on his gsxr750 and while highway riding, he was kind of weaving from side to side, staying in one lane. I'm sure this would probably help as well.
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 01:26:45 PM
Somewhat...  The idea is that you're CAREFUL when scrubing your tires...  Don't push to 100%, more like 50%...  And you'll push the scrub further and further.

Or get out the belt sander... HA HA HA  :laugh:
Title: Re: Proper scrub in
Post by: 3imo on April 11, 2006, 01:30:36 PM
Quote from: budget speed demon on April 11, 2006, 01:18:17 PM
I've ridden with somone who just put a new rear tire on his gsxr750 and while highway riding, he was kind of weaving from side to side, staying in one lane. I'm sure this would probably help as well.

My MSF instructor told us to do this constantly and that it is not against ALabama law.  The drivers handbook actually states that motorcycles will move in this manner and driver need to be weary.
He said do it for fun and do it to practice dodging things in the road. potholes, retread, rocks, dogs.

I was doing it in front of a COP and the fucker said he could give me a ticket for reckless driving.

but who cares its fun.  and It helps get rid of tire hair.
Title: Re: Proper scrub in
Post by: budget speed demon on April 11, 2006, 01:30:46 PM
Quote from: RVertigo on April 11, 2006, 01:26:45 PM
Somewhat...  The idea is that you're CAREFUL when scrubing your tires...  Don't push to 100%, more like 50%...  And you'll push the scrub further and further.

Or get out the belt sander... HA HA HA  :laugh:

belt sander? screw that, BURN OUTS!
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 01:31:31 PM
It's hard to burn out the edge of the tire...   :dunno_white:  A burn out will clear the middle really fast though.
Title: Re: Proper scrub in
Post by: LimaXray on April 11, 2006, 01:38:53 PM
When I get new tires, I do the four-wheel-peel as much as possible and drive like a total jack ass until the damn thing wants to stay on the road... dunno if I'd recommend that tho, I scrubbed my GS's tires by riding like a slow ass noob... oh wait I am a slow ass noob :o
Title: Re: Proper scrub in
Post by: budget speed demon on April 11, 2006, 01:45:55 PM
burn out scrub in isn't a very good idea anyways. for one your wasting brand new tires, and two you end up with a rear tire that is scrubed in much more than the front one.

On another note, I just finished 3hrs of cleaning, sanding and re-cleaning my rims. as of tomorro night I should have a nice set of gloss black wheels with new tires.
Finnaly the stealth GS is coming along. Monday the frame and lower fork legs go black, and soon after the body work will follow suit.
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 01:51:25 PM
Quote from: 3imo on April 11, 2006, 01:30:36 PMHe said do it for fun and do it to practice dodging things in the road. potholes, retread, rocks, dogs.
I do it too...  Sometimes for fun and sometimes to attract attention...

If I think someone should be seeing me, but isn't I -/\/\/\/\/\/\/\/\- in my lane... 

I read a thing about how a dragonfly hunts (I think I read it here)...  They fly really damn fast at their prey...  The prey can't tell how fast the dragonfly is going until it's too late...  But, a side-to-side movement breaks the visual effect.

[edit] Found it:  http://gstwins.com/gsboard/index.php?topic=19930.0   :thumb:
Title: Re: Proper scrub in
Post by: scratch on April 11, 2006, 02:21:47 PM
A survival tactic I learned is when coming up on an oncoming car turning left across my lane is to angle towards the right hand side of my lane so that they have a better idea of how fast I am coming at them.  Zig-zagging has pretty much the same effect.  So would a scarf flapping in the wind.
Title: Re: Proper scrub in
Post by: 3imo on April 11, 2006, 02:41:23 PM
I am gonna start a new thread for that motion camo write up.
I think others should see it.
Title: Re: Proper scrub in
Post by: pantablo on April 11, 2006, 03:06:00 PM
Quote from: RVertigo on April 11, 2006, 12:57:51 PM
You'll only scrub in the parts you ride on, so... Slowly work your way towards the edges, but know they they'll be slick when you get to the edge.

Once the hair and shine are gone, they're probably scrubbed in that area.

not true. they "scrub in" from the heat generated, not from physical contact to the street. rule of thumb I've heard was 100 miles. but I've scrubbed tires in on first lap of trackday...

The key is to be easy with them and slowly increase your lean angle as you ride those first 100 miles. One shop said it best, ride the first 100 miles like you're riding in the rain. smooth, no abrupt motions, etc.

also, the weaving motion does nothing for the tires, new or not.
Title: Re: Proper scrub in
Post by: mike_mike on April 11, 2006, 03:06:33 PM
Page 4-2 of the owners manual for the F models says 160km/100 miles of riding with increasing lean angles.
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 03:22:03 PM
Quote from: pantablo on April 11, 2006, 03:06:00 PMnot true. they "scrub in" from the heat generated, not from physical contact to the street. rule of thumb I've heard was 100 miles.
SRSLY?  My edges were slippery as hell long after 100 miles (which I rode like a grandma on a Rascal)...  Once the hair and shine were gone, I didn't notice the slip any more.  :icon_confused:

Maybe 'cause it's cold all the damn time up here...   :dunno_white:
Title: Re: Proper scrub in
Post by: pantablo on April 11, 2006, 03:33:33 PM
Quote from: RVertigo on April 11, 2006, 03:22:03 PM
...slippery as hell long after 100 miles (which I rode like a grandma on a Rascal)...

maybe because its cold, maybe because you didnt ride the tires hard enough in those 100 miles. if they're not scrubbed in you wont notice it really when riding a straight line, only in the turns. rememeber that hard accelerations also heat up the tire and burn off the oily residue.
Title: Re: Proper scrub in
Post by: RVertigo on April 11, 2006, 03:47:02 PM
I just thought the oil came off when it rubbed on the road...   :dunno_white:
Title: Re: Proper scrub in
Post by: rangerbrown on April 11, 2006, 03:59:07 PM
i brokein my new rear tire at deals gap, the first day was... scarry as hell, then i found out the front tire was about 10psi low to what i keep it at, and the rear would  "walk" kinda like drifting in a car.


good thing i have lots of dirt riding on my gs, 3 mile dirt road. every single day to get to a paved road.


its cool as hell to get sideways on the gs in 4th gear. but you must remeber not to lean in the turns as that leads to bad things.
Title: Re: Proper scrub in
Post by: makenzie71 on April 11, 2006, 04:08:10 PM
Pirelli's pretty good about their release compounds and glazing.  Both Pirellis and Dunlops I just hit with some 80 grit sand paper...works fine.  Others, like Bridgestones, I give a good work over with the sand paper and then go do a couple figure-8's on some clean asphault.  Works great.
Title: Re: Proper scrub in
Post by: budget speed demon on April 11, 2006, 06:57:42 PM
Quote from: makenzie71 on April 11, 2006, 04:08:10 PM
Pirelli's pretty good about their release compounds and glazing.  Both Pirellis and Dunlops I just hit with some 80 grit sand paper...works fine.  Others, like Bridgestones, I give a good work over with the sand paper and then go do a couple figure-8's on some clean asphault.  Works great.

really? I think I might try that
Title: Re: Proper scrub in
Post by: makenzie71 on April 11, 2006, 07:02:15 PM
Just make sure the surface is really dull...the slick stuff is the shiny glazing that's left on the tire from the molding process.
Title: Re: Proper scrub in
Post by: FearedGS500 on April 11, 2006, 07:26:16 PM
no you can do a small burn out .  as the tire is spining lean to the left then lean to the right . it will do its job . then you will only have to go about 25 miles before you can really get on it . :) ( oh and dont worry just keep control of the bike and it wont jet off on you :) i know . when i drag race my gs thats what i do to warm the tires up  :cookoo: but it helps a little )
Title: Re: Proper scrub in
Post by: budget speed demon on April 11, 2006, 08:29:43 PM
wow I got alot of good info. putting it all together this is what I'm going to do.

mount the tires tomorro, bring them home and finish painting the wheels, sand the tires abit, then mount the wheels thursday night and take the bike over to a parking lot to do some slow figure eights. then still take it easy on them for about 100km
Title: Re: Proper scrub in
Post by: 3imo on April 12, 2006, 06:43:17 AM
Quote from: pantablo on April 11, 2006, 03:06:00 PM
also, the weaving motion does nothing for the tires, new or not.

ah..Man.. :dunno_white:
Title: Re: Proper scrub in
Post by: tkm433 on April 12, 2006, 02:53:16 PM
Quote from: budget speed demon on April 11, 2006, 11:38:19 AM
Well along with my new front end, I'm installing a new set of Pirelli Sport Demons. I know when you put new tires on they are very slick and need to be properly 'scrubbed in' before you go to crazy in corners. How many miles does a proper scrub in involve? Is there any specific tricks to doing this?

The proper scrub in as you refer to requires you to run the tire for enough time to heat up the tire to allow for any factory applied tire protectors or oils and the likes form the tire mold to burn off. 

You do not need to sand your tires with sand paper??????
You do not need to do burn outs???????????
You do not need to do anythig stupid to your tires????????

Just ride the bike on the highway for for an hour and it should heat the tires up enough to burn off anything on the tires.

What do you think they do with race bike tires????  Ride them for a 100 miles to scrub them in before they can race on them???????  No, they get a warm up lap or two and then they race on them.  How long is a lap?  At most 3 miles!  So lets say they do three warm up laps that would be less than 10 miles.


So just take it easy for the first hundred miles and you should be OK.  Being that they are new tires double check the tire PSI and get use to the new feel of the tires before you begin to push it.
Title: Re: Proper scrub in
Post by: makenzie71 on April 12, 2006, 03:02:46 PM
QuoteSo just take it easy for the first hundred miles and you should be OK.

Perfect advice for anyone who likes spending a day riding like a wuss.

None of the suggestions in this thread were intended to be mandate or processes deemed "necessary"...you're taking it a bit too seriously.  There's more ways to scrub the release compounds off than "taking it easy for so many miles" or "running a few practice laps"...
Title: Re: Proper scrub in
Post by: pantablo on April 12, 2006, 04:59:36 PM
mak, that was unnecessary. totally unnecessary language. chill out and keep it civil.
Title: Re: Proper scrub in
Post by: makenzie71 on April 12, 2006, 05:05:40 PM
Fixed.  Oh, and there was nothing "un-civilized" about my post...sorry if that's the way it come across.

(I honestly didn't think the "p" word was that bad here...considering how many times it's posted without reprimand...)
Title: Re: Proper scrub in
Post by: pantablo on April 12, 2006, 05:13:01 PM
its always reprimanded if its not in TD. That word is inappropriate. thanks for fixing it.
Title: Re: Proper scrub in
Post by: budget speed demon on April 12, 2006, 06:02:12 PM
Well the wheels have been primed, and I mounted and balanced the tires today. I'm going to finish the black paint tonight and mount them on the bike tomorrow night. Thanks for all the suggestions and maybe I'll add an hr or 2 of highway riding into my scrub in time for good measure. I think I can handle riding like a wuss for one more day.