What size tires should i get for AutoCrossing?

AutoX Z · 07-03-2010, 08:34 AM

Quote:

Originally Posted by Scott @ RA

Really, can you please show me a 370Z that is running 18x10's with a 335 or even a 315 all the way around??....

All the autox guys are currently running 295 square on the stock wheels. Getting a slightly wider wheel with a better offset and 315 would be easy. 335 might require some fender modification but it should be doable.

cossie1600 · 07-03-2010, 08:03 PM

If he is talking about track, all he really needs to start is a set of brake pads (XP8 or XP10), brake fluid flush and some decent tires. Once again, there is no need for any major mods before the driver. I won a Redline Time Attack with a stock vehicle on Run Flat tires (street class) against many highly modified cars. I do highly recommend changing brake pads and fluids as a safety precaution. The OEM rotors are 14", please don't tell me you have to get Wilwood.....

R comps are probably one of the worst thing you can put on a novice driver. They usually release grip with no sudden warning, it's usually not recommended unless the driver could handle it.

315 or 335 might be nice for autox, but they are overkill on the track as they scrub way too much speed. Also that would mean going to a Hoosier.

Quote:

Originally Posted by Scott @ RA

What I understood after talking directly to Mozen is that he is looking to get more into REAL track days, HPDE's, and some sort of Time Attack and time trials, etc.
Autocross is one thing, but actual track events are completely different.
Brakes become MUCH, MUCH more important when tracking... not only from a performance and repeatability standpoint, but more importantly from a safety stand point as well.
Suspension (ie: sway bars, coilovers etc) also become increasingly important when tracking, compared to coned off parking lots. There is MUCH more speed and corner speed carried on tracks and the need for better brakes and suspension vs tires goes way up when dealing with the higher speeds.

Although in steps, I would put proper wheels and tires right up there as a very close third on the to-do list, right under brakes and suspension.

Mozen · 07-04-2010, 04:54 AM

Quote:

Originally Posted by cossie1600

If he is talking about track, all he really needs to start is a set of brake pads (XP8 or XP10), brake fluid flush and some decent tires. Once again, there is no need for any major mods before the driver. I won a Redline Time Attack with a stock vehicle on Run Flat tires (street class) against many highly modified cars. I do highly recommend changing brake pads and fluids as a safety precaution. The OEM rotors are 14", please don't tell me you have to get Wilwood.....

R comps are probably one of the worst thing you can put on a novice driver. They usually release grip with no sudden warning, it's usually not recommended unless the driver could handle it.

315 or 335 might be nice for autox, but they are overkill on the track as they scrub way too much speed. Also that would mean going to a Hoosier.

Im not going with a crazy BBK. After talking to people who race for a living like Scott and then a few of the guys in my unit im only upgrading my Brakes to the sport package Akebonos, ill throw SS lines on there, Correct Pads for Track or AutoX depending what im doing and better fluid.

Since i want to, ill upgrade the Suspension, throw in the whiteline sway bars, Intake, Exhaust, oil cooler. Just about everything else im doing the the car is for safety. (4 Point Roll Cage, FIA Seat/Harness(HANS device compliant) HANS Device and helmet. For the SCCA events ill not change out my stock summer tires but when i go to the track ill throw on something different.

That all said i still have 8 months until this deployment is over and i can spend some serious time driving both at the local track and our airfield for army/scca events.

That gives me plenty of time to decide what i want to do, spend or save money and so on

Im still open to feedback and ideas although it does seem like the topic has changed :P perhaps i should nix the thread?

IMWEZL · 07-05-2010, 04:53 AM

Alright CPT G says save your deployment money or put it into paying the car off

Seriously, I would go auto-x first stock just to get a feel of how you and the car perform. Auto-X is usually more forgiving then open tracks too...trust me you don't want to lose it on a turn and smack a guard rail/stack of tires.

....but its your ride and at least you are thinking in the right direction for safety.

A set of wheels & tires will give you some more traction and if lighter free up some weight. My biggest gripe during a season of Auto-x was that if I got on the throttle too early with the VDC off I could easily spin the rears on the sport tires/wheels. I'm not sure if that's even possible anymore with the RE-11 305s in the rear.

Maybe you want to look into a rear diff since you don't have the Sport?

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07-05-2010, 04:53 AM	#19 (permalink)
IMWEZL Track Member Join Date: Apr 2009 Location: HNL Posts: 603 Drives: 370Z/MKVII GTI Rep Power: 17	Alright CPT G says save your deployment money or put it into paying the car off Seriously, I would go auto-x first stock just to get a feel of how you and the car perform. Auto-X is usually more forgiving then open tracks too...trust me you don't want to lose it on a turn and smack a guard rail/stack of tires. ....but its your ride and at least you are thinking in the right direction for safety. A set of wheels & tires will give you some more traction and if lighter free up some weight. My biggest gripe during a season of Auto-x was that if I got on the throttle too early with the VDC off I could easily spin the rears on the sport tires/wheels. I'm not sure if that's even possible anymore with the RE-11 305s in the rear. Maybe you want to look into a rear diff since you don't have the Sport?