Recommendations for "Best" Autocross Tire & Wheel setup
I am currently runing a MK3.1 in autocrosses, and it is clear to me that my tires are just not up to the challenge. I would like to purchase a set of wheels and tires, specifically for Autocross and Track time.
I am running the 17" Halibrand Replicas, sold by FFR and would like to stick with similar size tires and wheels.
Front Wheel Size (Diameter x width): 17"x 9" 6.00" Backspace (24mm offset)
Rear Wheel Size (Diameter x width): 17"x 10.5" 6.7" Backspace(27mm offset)
Wheel Lug Pattern: Ford style 5 lug x 4.5" bolt circle
I am currently running Nitto 555 Tires.
Front: 245/45 R17
Rear: 315/35 R17
I am considering A6 Tires but was wondering what others had experience running, good/bad & Neutral
You want the A6 for Auto-x, the R6 is a slightly harder compound for RR use. The R6 takes a while to warm up. I had them on my old Auto-X corvette and they do not start to grippy until you have about 3 runs on them. The A6 will bite on the first run and get better as they heat up a bit. If it a warm day you might have to spray them down after 3 runs as they get so soft. They are very sensitive to alignment specs and tire pressure so if you choose them check pressure often. I run 275 F 315 R on my Coupe and I've see 295 F on some Roadsters if you have the correct rim with and you are willing to run a lot of caster. You should get about 100 runs on them before you need new ones assuming you trailer your car or use a trailer to haul them. They are very soft and will pick up all kinds of grit. I often find small pieces inside my car after an event.
I'v tried them all. Your choices are slightly limited by available sizes. For example, you can't use a Hankook. I trailer the car to the track.
Hoosier R6 is a fast tire out of the box. But it quickly degrades. It will heat cycle out before it wears out. You also need a fair amount of camber to get good use out of it; like 1.75-2.25*
Toyo 888 was a terrible tire. It quickly got greasy and became less than useless. I got rid of them long before they wore out.
BFG R1 was pretty good. But it uses a higher inflation pressure, and that gives it a stiffer side wall. If the track is rough it will bounce you around a bit, and unsettle the suspension. I think it would be a good tire for a heavier car, like a Mustang.
Kumho V710 is my favorite tire. It is about the same cost as the Hoosier. But it stays fast a lot longer, and won't heat cycle out as quickly. I can get almost a whole season out of them. It works well with a lot less camber; like 0.5-1.25*.
.boB "Iron Man"
NASA Rocky Mountain TTU #42
Dart 427W, Momar 8 Stack EFI, 600'ish hp, TKO, 3.55 TruTrac, Red with Ghost Flames. More fun than should legally be allowed.
I can trailer to and from the tracks, primarily looking for autocross for next summer with "A" class road racing. While it sounds like the A6 are a good tire for what I will be using it for....What about wheel recommendations.
I too preferred the Hoosier A6 over the V710. As far as wheels go I did have the same Bullitt wheels but fould them to be very heavy. When I got some new wheels I went with the Enkei RFP1. I forget the price but they were not crazy expensive and you could feel the difference when you picked one up.
Formula Jedi (BM, Hill Climb, TT Special)
LeGrand MK25 rebuild in progress
** Sold **
FFR #5662, MKIII, Carbed 351w,Garrett Turbo,TKO, 8.8 3.55, 3-link, Koni's, VPM Sway Bars, Wilwood Superlites, 17" Goodyear F1D3 Street or Hoosier A6 solo.
poison: Glad to share my experience and try to help. This forum was a find for me after I started to build my car and I knew what I wanted to do and found out here how to do that. Without the members and vendors on this forum I could not have built it the way I wanted it to turn out.
Keep in touch let us know how it turns out:
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