[TraSTi]

Hey guys i'm a newbe at autoXing and don't know the rules to good although i do have the PDF file. Stock car starts in A right?? Then Exhaust and EM goes to STU then if i were to go with some 18x8.5 wheels would that bump me somewhere else of would it be completely illegal??

[straightouttajersey]

Originally Posted by TraSTi

Hey guys i'm a newbe at autoXing and don't know the rules to good although i do have the PDF file. Stock car starts in A right?? Then Exhaust and EM goes to STU then if i were to go with some 18x8.5 wheels would that bump me somewhere else of would it be completely illegal??

I don't think the wheels matter...but I know tires do...

[91TB78]

In STU you can have ANY wheel you like, but the tire's width cannot exceed 245.

Additionally, when you say engine management, keep in mind that STU rules DO NOT allow boost increases, only fuel and timing. If your EM has boost increases you'll be in BSP automatically and only go up from there.

[TraSTi]

ok so with Protune it would be BSP and then would they allow the wheels ? because on the rules for STU at least it says any wheel up to 7.5" width or something

[T3h_Clap]

Originally Posted by TraSTi

ok so with Protune it would be BSP and then would they allow the wheels ? because on the rules for STU at least it says any wheel up to 7.5" width or something

you're thinking STX.

and if you're in BSP its free reign on wheels and tires.

what suspension are you running?

only things legal in stock are;
Front Sway
17x8 +46-+60 (7mm within stock offset (it maybe 8mm))
catback
and Shocks, struts that don't raise/lower the car at all.


I personally compete in BSP so if you've got questions fire away.

[91TB78]

Originally Posted by TraSTi

ok so with Protune it would be BSP and then would they allow the wheels ? because on the rules for STU at least it says any wheel up to 7.5" width or something

Correct, with a Protune you'll be in BSP. As for wheels, you're free to do as you like in both STU and BSP.

[Web_Foot_STi]

Originally Posted by T3h_Clap

only things legal in stock are;
...
17x8 +46-+60 (7mm within stock offset (it maybe 8mm))
....

The allowance is +/- 1/4", or 6.35mm from the stock 53 mm offset. A minor difference, but...

[T3h_Clap]

Originally Posted by Web_Foot_STi

The allowance is +/- 1/4", or 6.35mm from the stock 53 mm offset. A minor difference, but...

thank you for that, I stopped competeing in AS a while ago so the little stuff slipped my mind.

[kts262]

Originally Posted by T3h_Clap

you're thinking STX.

Actually he's thinking STS.

STX and STU are unlimited in wheels, but 245mm tires are the max for both classes on AWD vehicles. STS has the 7.5" wheel width limit.

I was looking into this last night since I was looking at another set of wheels.

To the OP, 17x8 or 17x8.5 wheels would be better I think. Lighter, cheaper, and the tires are a lot cheaper too.

[TraSTi]

So you wouldn't go with 18x8.5 for performance purpuse (maybe just for the looks) Would it be lighter to have the 18x8.5 as compared to a reinforced side wall tire with a big side wall (these could get heavy)

[T3h_Clap]

Originally Posted by TraSTi

So you wouldn't go with 18x8.5 for performance purpuse (maybe just for the looks) Would it be lighter to have the 18x8.5 as compared to a reinforced side wall tire with a big side wall (these could get heavy)

it all depends on the wheel's weight, tire weight, yada yada yada

[91TB78]

I would say going with a 17X8.5 would be more beneficial then a 18X8.5 from a performance standpoint. The same wheel will weigh less in a 17" then an 18".

Of course, if you want the 18"s for longer gearing, then that's a different story.