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Post by lancer360 on Dec 14, 2007 18:43:32 GMT -5
What tires are you guys using on street prepared vehicles in level 3 and 4 events? I was thinking you would need to run something like the R6, but talking to an Elise tuner today, he said that you could easily run the A6. That shocked me a bit as I thought you would cook an A6 trying to run laps with it. Being that I have never done TT, are the sessions just so short that you don't really have to worry about overheating a tire, especially with such a light car?
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Post by markt on Dec 15, 2007 3:34:12 GMT -5
Kumho v710 here. This year on 2 sets we got all 7 TT in plus all the CCR autocrosses(including NCAC) as a 2 driver car and still have enough left to get the first event or 2 in next year. I know many use the Hoosiers but I don't know if they're using R or A. Toyo is also used quite a bit.
TT doesn't seem to be as hard on tires as autox in some respects. You don't turn as much or as hard as you do in autox. Track events usually mean a 15-20 minute Saturday practice session then you will run 6-7 timed 5-lap sessions for the rest of the event. The sessions are 1 warm-up lap, 3 hots and a cool-down. With hillclimbs you will get up to 14 runs in a weekend with Sunday afternoon being the most active, usually.
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Post by lancer360 on Dec 15, 2007 7:38:48 GMT -5
How do the 710's compare to the A6? I'm not that familiar with the 710's.
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Post by markt on Dec 15, 2007 14:03:00 GMT -5
Kumhos cost less than Hoosiers. In my case, going to 13", I had to make a decision based on wheel size, 7" wide for the Kumhos, 8" for Hooser. by going with the Kumhos I ended up $350 less for the initial set of wheels and tires. Kumhos also have a reputation for longer wear. In peak performance the Hoosiers may have an edge.
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Post by czrider on Dec 18, 2007 9:43:55 GMT -5
Time Trial/Solo tire choice will depend on your budget, type of car and purchase timing. If you want the latest tech and most durable, the BFG, if available in your size, is an option. The 710s are not as quick as the Hoosier but they are cheaper. The 710s are fast for the first lap on a level 3 course and go away as the heat builds. If it is early in the year and the track surface is cool then they hold up better. Also if you have a light, low horse power car, then they stay with you longer.
The A6 can be run on level 3 events, if, as above you have a light car, and the temperature on track surface is low. If it is a hot summer day they will splash your fenders with melted rubber. A6s do work well for level four events since there is not much chance to build tire heat. The R6 is a good all around compound for longer lasting competition use in both Solo and TT.
CZRIDER
DOTs in TT/Solo I since 1982.
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Post by lancer360 on Dec 18, 2007 11:11:17 GMT -5
Which BFG are you referring to? I didn't realize BFG was in the r-comp business. I'm seriously considering a set of A6's for next season since I do autocross, but I will need another set of wheels to do it and that will depend on the $$$ come spring. I will keep my RA1's on my current 15/16 wheels for track days and hot level 3 events and when they are worn out look at the R6. The car is pretty light (1900 lbs) so I'm hoping I can make A6's work for most events, but that may change if I start burning through them quickly.
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Post by czrider on Dec 18, 2007 15:49:01 GMT -5
BFG/Michelin is back in the DOT-R tire production. Not all sizes are available yet, but if you check out the Tire Rack web site or go to B.F.Goodrich on Google, the info should be available.
CZRider
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Post by lancer360 on Dec 18, 2007 17:14:41 GMT -5
Thanks for the info. I've been talking to one of the guys that helps to set up an ASP Elise that trophied at nationals this year. They tried F275/35R15 and R285/30R18's but are thinking this was just too much tire, even for their supercharged Elise (mine is N/A). They are trying to decide between the 225/40R17 and 245/35R18 A6 or a 215/40R16 and 245/35R18 V710. The A6 should have the performance edge over the V710 though so that is the way they are leaning. Ultimately, if I want to be more competitive and be able to give those pesky Vettes a run for their money in ASP I will need to get some A6's. Unfortunately, this will mean another set of wheels as neither my street wheels or current race wheels will work.
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