Squared off tires at the track? - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 32 (permalink) Old 07-08-2011, 01:50 PM Thread Starter
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Squared off tires at the track?

My track bike also happens to be my commuter. With 5 days a week of 30+ mile round trip to work, vs ~1 track day a month I've ended up with some pretty square tires.

The track days are pretty new to me, so I'm still on my first set of tires (regular Pilot Powers) that have been subjugated to track duty. I've noticed they've really lost their shape lately - the bike barely leans when turning 90 degree corners around town, but there's still plenty of tread left. Is this going to be bad news the next time I get out to the track? It seems silly to ditch a set of tires when they've still got 50% tread left. I'm running a fast beginner / slow intermediate group pace.

My next set is definitely going to be a multi compound tire, so that should help. My R1 has been off the road for awhile too, but should be rolling again to help soak up some of the commuting miles. I think long-term I'm going to ditch the R1 for something more reasonable as a daily driver and let the R6 be for track/canyons only.
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post #2 of 32 (permalink) Old 07-08-2011, 02:12 PM
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Re: Squared off tires at the track?

Hard to say without pics, but I'd say you'd probably have a hard time passing tech at the track with some cupped tires like that.
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post #3 of 32 (permalink) Old 07-08-2011, 02:18 PM
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Re: Squared off tires at the track?

Get new tires. Put the PP's back on when you go back to street.

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post #4 of 32 (permalink) Old 07-08-2011, 02:35 PM Thread Starter
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Re: Squared off tires at the track?

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Originally Posted by GIJoe007 View Post
Hard to say without pics, but I'd say you'd probably have a hard time passing tech at the track with some cupped tires like that.
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There's no cupping yet, the profile is just flattened out.

Also, paying to have tires mounted twice every time I go to the track doesn't sound too appealing either. I might have to price out a second set of wheels...
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post #5 of 32 (permalink) Old 07-08-2011, 02:40 PM
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Re: Squared off tires at the track?

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There's no cupping yet, the profile is just flattened out.

Also, paying to have tires mounted twice every time I go to the track doesn't sound too appealing either. I might have to price out a second set of wheels...
I've considered this several times...
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post #6 of 32 (permalink) Old 07-08-2011, 03:07 PM
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Re: Squared off tires at the track?

I'd say switch the order of your tire use ... use the new ones for the track (you'll wear the far edges quickly), then take those to the street where you can square them up.

I sell race tire takeoffs all the time. They're like new in the middle of the tread.

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post #7 of 32 (permalink) Old 07-08-2011, 03:07 PM
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Re: Squared off tires at the track?

Build a bead breaker and buy a couple of tire spoons. You can't go fast on shit tires...

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post #8 of 32 (permalink) Old 07-08-2011, 03:32 PM
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Re: Squared off tires at the track?

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Originally Posted by danaatscootdotnet View Post
I'd say switch the order of your tire use ... use the new ones for the track (you'll wear the far edges quickly), then take those to the street where you can square them up.

I sell race tire takeoffs all the time. They're like new in the middle of the tread.
This is good advice...but the take offs you're mentioning. These DOT race, race, street?


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post #9 of 32 (permalink) Old 07-08-2011, 05:38 PM Thread Starter
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Re: Squared off tires at the track?

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Originally Posted by danaatscootdotnet View Post
I'd say switch the order of your tire use ... use the new ones for the track (you'll wear the far edges quickly), then take those to the street where you can square them up.

I sell race tire takeoffs all the time. They're like new in the middle of the tread.
Not quite sure what you mean... it's not like I have a choice. If it were up to me, I'd be ought on the track every day of the week. I go as often as I can, which is about once a month, but the bike gets ridden on the street pretty much every day in between.

Anyway! I've got a longer term solution to my tire woes planned out. In the short term, I'm really looking for feedback on if a squared off tire is actually going to cause any issues on the track - ie, am I going to get a smaller contact patch or less grip when leaned over? Or is it just going to transistion to lean a little funny cause the profile is different?
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post #10 of 32 (permalink) Old 07-08-2011, 07:15 PM
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Re: Squared off tires at the track?

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am I going to get a smaller contact patch or less grip when leaned over? Or is it just going to transistion to lean a little funny cause the profile is different?
At the point where the squared off meets the rest of the tire, you are going to get a funny lean transition, and you'll have a reduced contact patch only at that point.

Not sure if you'd pass tech. Call them and ask.


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