02-09-2012, 10:08 AM | #1 |
Mark Stanford
Drives: Black 2010 SS LS3 Join Date: Aug 2010
Location: Wauconda, IL
Posts: 78
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Best 20" tires for autocross?
I've got the knock off 20" American Racing (mad in China) torque thrust weels. Fronts are 9" wide, back are 10" wide. This year I'm running Mickey Thompson ET Street II in P305 width on the back. What I'm looking for is front tires for autocross. Michelin Pilot Sport Cup looks good, though 245 width is a little narrow for 9" wide wheels.
Anyone have any other suggestions that Pilot Sport Cups for the front? (Stock 245 Pzeros on front are pretty worn, and weren't that great for autocross last year.) The cheapest I can find these pilot sport cups is $477 per tire. Anyone try autocrossing with Nitto or MT drag radials in the back? Full BMR suspension poly bushings and roll bars will go on the car very soon. Hopefully a Janetty Racing 3.91 LPE gear pumpkin with BMR diff bushings as well. My best 1/4 mile last season was 12.5@116mph. (60' times in the 2.1 to 2.0 range :-( Yes, I want to autocross and drag race the same car, and not have to change wheels every weekend.
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Mark Stanford
2010 M6 Midwestracing on FB CAI, Kooks 1 7/8" 3", LG G6X3, Remote tune by Ted Jannetty JRE God of Tuning, ID 8500 injectors, ZL1 Fuel system, BMR, Yellaterra, Lunati Valve train, Street Slayer Carbon Twin. Numbers pending Dyno test. |
02-09-2012, 10:39 PM | #2 |
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Bump - curious on the opinions too???
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02-10-2012, 03:10 AM | #3 |
RAM'S CAMARO
Drives: 2010 camaro ss 2015 Z-28 Join Date: Apr 2009
Location: mt. pleasant south carolina
Posts: 1,025
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I haven't ran any autocross events, all road racing events I run Toyo's R888 285/35/20
This a great tire, we are very limited on a 20in tire. Eriq from TORQ runs these tires also, he has run several autocross events on these tires. Best of luck....Michael
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02-10-2012, 05:02 PM | #4 |
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you run the 285's on the front? Any clearance issues? Is your car lowered?
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02-12-2012, 06:52 PM | #5 | |
Drives: One of the baddest handling Gen 5s Join Date: Feb 2011
Location: Masachusetts
Posts: 4,177
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02-12-2012, 08:15 PM | #6 |
Mark Stanford
Drives: Black 2010 SS LS3 Join Date: Aug 2010
Location: Wauconda, IL
Posts: 78
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Someone told me I would peel the drag radials off the rims trying to auto cross them. Anyone disagree with this statement, especially based on experience, VS opinion?
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Mark Stanford
2010 M6 Midwestracing on FB CAI, Kooks 1 7/8" 3", LG G6X3, Remote tune by Ted Jannetty JRE God of Tuning, ID 8500 injectors, ZL1 Fuel system, BMR, Yellaterra, Lunati Valve train, Street Slayer Carbon Twin. Numbers pending Dyno test. |
02-13-2012, 05:59 PM | #7 |
Drives: Rally Yellow Camaro+Avalanche Join Date: Dec 2009
Location: Vancouver
Posts: 1,110
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Don't run the drag radials on an autocross course. Drag radials, by design, have a weaker sidewall to allow for flex during hard launches. Autocrossing requires very stiff sidewalls to keep the tire from "rolling over". So, although the drag radials might not "peel" off, you will damage their sidewalls using them for auto-x.
In terms of 20" autocross tires, see my sig for what I'm running. Your best bet is to run as wide a tire as possible front and rear. I'm looking into running 10.5" or even 11" rims up front for my car. R-compound tires are hard to come by in 20". In fact, I think only the Toyo R888s are 20" R-compound.
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Vengeance Kaotik Cam, C.A.I., ARH LT, Pypes Cat Back, ZL1 Shifter+2012LS3VERT bushing, Quantum Brake Ducts, JDP Tow Hook Scorch Yellow Trim Kit, Shark Fin, AAC DRLs+ABLs+SMDs, ZTA Rear Spoiler, R.Y. 1LE Splitter. Pfadt coilovers, camber plates, trailing arms, Pegasus Solid Subframe. Pedders ZL1 barz, radius arm & steering rack bushings. BMR adjustable toe-rods. Hotchkis Max Chassis Brace. ZL1 GMPP Driveline Upgrade. TurnOne P/S pump. CTS-V 6 pistons.
447 HP @ 6180 RPM / 418 TQ @ 5100 RPM |
02-15-2012, 08:52 PM | #8 |
Drives: 2010LSM6 Join Date: Feb 2011
Location: Valparaiso, IN
Posts: 108
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Mark,
Look at the Michelin Pilot Super Sports. They come in a huge variety of sizes, including 20 inch. From what I have been reading, they ought to be pretty decent auto-x tires. Not to mention a perfectly streetable upgrade from the p-zeros. Interestingly as well, these tires are significantly lighter than other brands in the same size. Like 4 to 5 pounds per tire. And like I told you, I highly doubt that drag radials will pass tech inspection for auto-x.
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K&N Typhoon, Spohn sway bars, Pedders front radius rod bushes, BMR cradle bushing inserts, Enkei Tuning Raijins (20.7 lbs ea.), Dunlop Direzza Z1 Star Specs, -2 front camber, -1 rear.
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02-15-2012, 09:48 PM | #9 |
So Cal Race Team
Drives: 2013 Camaro Join Date: Mar 2010
Location: Sunny So Cal
Posts: 3,584
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I like the Nitto NT-05's...They work well on the autocross course, 200 treadwear, so pretty good grip and work for drag racing too...
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02-16-2012, 05:55 AM | #10 |
Drives: 2010LSM6 Join Date: Feb 2011
Location: Valparaiso, IN
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Yes! NT-05s are also going to be very good auto-x tires for any of the street classes based on numerous reviews I have read.
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K&N Typhoon, Spohn sway bars, Pedders front radius rod bushes, BMR cradle bushing inserts, Enkei Tuning Raijins (20.7 lbs ea.), Dunlop Direzza Z1 Star Specs, -2 front camber, -1 rear.
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02-16-2012, 02:48 PM | #11 | |
Mark Stanford
Drives: Black 2010 SS LS3 Join Date: Aug 2010
Location: Wauconda, IL
Posts: 78
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Quote:
__________________
Mark Stanford
2010 M6 Midwestracing on FB CAI, Kooks 1 7/8" 3", LG G6X3, Remote tune by Ted Jannetty JRE God of Tuning, ID 8500 injectors, ZL1 Fuel system, BMR, Yellaterra, Lunati Valve train, Street Slayer Carbon Twin. Numbers pending Dyno test. |
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02-18-2012, 12:50 AM | #12 | |
The Mechanic
Drives: a sports car Join Date: Dec 2011
Location: Louisiana
Posts: 316
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02-18-2012, 03:28 AM | #13 | |
RAM'S CAMARO
Drives: 2010 camaro ss 2015 Z-28 Join Date: Apr 2009
Location: mt. pleasant south carolina
Posts: 1,025
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I also have MTI Racing coil overs, there are issues with clearance, what I had to do is change out the front 10in spring to a 8in spring, even with the Phadt coil overs you have to change out the springs.
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02-18-2012, 03:45 PM | #14 | |
The Mechanic
Drives: a sports car Join Date: Dec 2011
Location: Louisiana
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