You can do 10" square with factory camber specs. A lot has to do with spring rates too though.
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You can do 10" square with factory camber specs. A lot has to do with spring rates too though.
Re spring rates, I'm planning on keeping the suspension stock. Do you think that'll cause rubbing with 10" wheels and camber within factory specs?
Would you be running the wide square set up all the time or just for track?
Careful using OE rears on front. Higher offset number causes interference... will need small spacers. Check out edmunds long-term test.
If you are wedded to narrow winter wheels...grab two OE fronts and go 9" square. Then go 11 square for track. You can grow into that setup and (ultimately) save $$$ by not having to chase speed/grip constantly buying wider track wheels.
I'm not locked in to anything yet. My idea about the narrow winter wheels/tires comes from advice consistently shared in BMW groups. They say to get the narrowest winter tire the manufacturer says will fit the car. I think the idea is that a skinnier tire will dig through snow and, therefore, get better traction. I'm not preparing to drive the mustang in snow. Hence, not wanting to fit the narrowest wheels and tires.
But, I do expect to drive the car during winter and past experience tells me that summer tires will wear quickly and won't grip well in cold temperatures. That, coupe led with preferring a square setup made me think the stock front wheels might be good at all four corners - for winter driving. You make a good point re using the 9" square setup for winter and, in spring, upgrading to an 11" square setup for summer and HPDE driving.
You cautioned against using the wider rear OEM wheel in front requiring spacers..understood and thank you! My perception from most of the other posts is that any square setup, with wider than stock wheels in front will require spacers.
The key thing I'm looking for is a square setup that will allow rotating the tires & wheels front to back. Is that even feasible? Is it better to just pay someone to switch the tires around and not rotate the wheels?
For a winter/all season wheel set-up I would go 19x9 then just buy a set of track wheels. Depending on the snow need, and you do not require snow tires and can use a performance all season and use them all year round check out OE Wheels.
3 years of track use, not a single issue.The OE wheels seem pretty cheap. Do you have experience with them to know they're good quality?
Was waiting for him to show up as I know he is using 19x10 square
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On a s197 with 3.31 rear I use 275/40/18 MPSS on Apex 18x9.5 for HPDE and daily driving. Winter I use Blizzak 235/50/18. Both work well for their intended use. As mentioned, with the shorter gearing of a PP, I might be inclined to step up to a 19" rim. I would think twice about going much wider than maybe a 10" rim and a 285 tire if lots of daily driving. Obviously I give up traction with my smaller MPSS but the car runs easily in intermediate and advanced run groups and is two fingers straight ahead stable on the road. No bad tramlining, the tires wear nice and even, and plenty of clearance all around.
Be careful to plan the setup not only around the 5 days a year on track but also the other 360 you're going to work.
By the way, I don't think spacers are automatically required to run a wider square setup. They certainly aren't on the s197. You just need to get the offset correct.