 Tire wear pattern |
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| wndsrfr |
 Nov 18 2013, 08:13 PM
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#1
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Senior Member  Group: Members Posts: 1,454 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region 
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Check out the pattern of the rubber on my RA1's. I did DE's at VIR, Watkins Glen and Summit point since flipping them mid season, so have about 400 miles on track, 15 heat cycles since flipping. These are the fronts....the rears are much more uniform without a buildup of "worms". The buildup is on the inside edges. I'm guessing that it's indicating that I need more camber but I'm maxed out already. Ideas?
BTW, total mileage on track with these tires since new in March is about 1700 with 61 heat cycles & no sign of cording anywhere yet. Attached thumbnail(s) 
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Replies
| Woody |
Nov 18 2013, 09:17 PM
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#2
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Sandbox Rabblerouser and head toilet scrubber Group: Members Posts: 3,858 Joined: 28-December 10 From: San Antonio Texas Member No.: 12,530 Region Association: Southwest Region |
Kind of hard to tell with all the opr buildup. What alignment settings are you running now? Is the tire rolling over on the outside?
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| wndsrfr |
Nov 20 2013, 04:17 PM
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#3
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Senior Member Group: Members Posts: 1,454 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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OK, Just measured the camber.....3/4" on a 16" rim gives 2.7 degrees negative camber. I'm inclined to go with Andy's assessment of too much camber along with my skill level not likely pushing the car hard enough also. I mean, something like 1000 miles and no spins....gotta turn up the heat, eh?
So, I'll back off the camber a bit, swap the backs to the front and see what I get at Roebling next month. Bob Woodman has a track day there ahead of the Florida Crown DE & I should be able to get temperature readings from his crew to figure out the setup. I'm sure he'll take one look and then sell me a new set of tires before it's all over..... Any input on the camber to shoot for on road courses other than the "max it out" adage? |
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| Woody |
Nov 20 2013, 04:46 PM
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#4
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Sandbox Rabblerouser and head toilet scrubber Group: Members Posts: 3,858 Joined: 28-December 10 From: San Antonio Texas Member No.: 12,530 Region Association: Southwest Region |
QUOTE(wndsrfr @ Nov 20 2013, 04:17 PM)  OK, Just measured the camber.....3/4" on a 16" rim gives 2.7 degrees negative camber. I'm inclined to go with Andy's assessment of too much camber along with my skill level not likely pushing the car hard enough also. I mean, something like 1000 miles and no spins....gotta turn up the heat, eh? So, I'll back off the camber a bit, swap the backs to the front and see what I get at Roebling next month. Bob Woodman has a track day there ahead of the Florida Crown DE & I should be able to get temperature readings from his crew to figure out the setup. I'm sure he'll take one look and then sell me a new set of tires before it's all over..... Any input on the camber to shoot for on road courses other than the "max it out" adage? You really need to be taking tire temps at this point. |
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| Randal |
Nov 20 2013, 09:09 PM
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#5
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
QUOTE(Woody @ Nov 20 2013, 02:46 PM) QUOTE(wndsrfr @ Nov 20 2013, 04:17 PM) OK, Just measured the camber.....3/4" on a 16" rim gives 2.7 degrees negative camber. I'm inclined to go with Andy's assessment of too much camber along with my skill level not likely pushing the car hard enough also. I mean, something like 1000 miles and no spins....gotta turn up the heat, eh? So, I'll back off the camber a bit, swap the backs to the front and see what I get at Roebling next month. Bob Woodman has a track day there ahead of the Florida Crown DE & I should be able to get temperature readings from his crew to figure out the setup. I'm sure he'll take one look and then sell me a new set of tires before it's all over..... Any input on the camber to shoot for on road courses other than the "max it out" adage? You really need to be taking tire temps at this point. +1 They will tell you exactly what is going on. Didn't you do this when you took the car out the first time with new tires? What does your corner balance look like? Any stiffing in the chassis as yet? |
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Posts in this topic
wndsrfr Tire wear pattern Nov 18 2013, 08:13 PM
SirAndy I'm guessing that it's indicating that I n... Nov 18 2013, 09:25 PM Matt Romanowski To read the tire, you have to do it without the bu... Nov 18 2013, 10:12 PM jhadler Just remember the old adage about Toyo race tires.... Nov 19 2013, 04:06 PM brant coat them with some race tire softner....
let them... Nov 19 2013, 07:01 PM SirAndy :agree:
Tire temps will tell you a lot.
If it we... Nov 20 2013, 09:29 PM Racer Chris All that pickup (buildup) on the inside of the tir... Nov 21 2013, 01:58 PM
jhadler Just curious. Does this car have suspension or cha... Nov 21 2013, 03:16 PM wndsrfr
Just curious. Does this car have suspension or ch... Nov 22 2013, 08:45 AM |
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