Is that why you have numbers, that don't match, on the doors?

Tom -- since you're car is primarily a smooth-pavement autocross purpose-built car, I highly suggest you get bigger TBs (~1.18 at the minimum, as well as eventually try 1.22, 1.24.. don't make quick decisions.... work with them for a few events/or a season or two, as well as perhaps stiffen the rear leafs... stiffer shocks, bigger sway bars, balance the weight at the corners in competition-ready weight.. with the driver and the approximate load (fuel) you'd be typically running.... it becomes a complete package to be the goal. Remember... your car runs on smooth flat surfaces and is autocross competition intended. Your tires are saying "help me stick so stiffen me up.... prevent excessive lift/dive".

I should have known it was going to be a bad day when someone stole my number!

Ya more concerned with going so stiff that the car feels like it's jarring itself violently on every little imperfection. When I forget to turn the shocks back to soft and drive back from track on full stiff its borderline uncomfortable. I'm hoping that with a 1.18ish bar and the shocks on soft it would still seem "street able".

Tom -- the ride with stiffer TBs area not jarring stiff with every nick in the road... there are ways to smoth the ride such as by simply adjusting the tire psi to a lower amount than what would be used during competition runs; or, for the "street", use a taller sidewall tire (I have 255-60-15 front, 275-60-15 rear for the "Street" cruising days).... and my 255-50-16 f/r HPDE/HSAX tires are just fine on the street/hwy (30 f, 28 r psi... competition 44 f, 40 r psi).

Ask anyone who has driven my car (1.24 TBs) on the street/hwy, as well as raced it, and they will tell you that the ride is fine... its not bad at all.. very enjoyable... very flat in handling and transient response.... very little lift/dive or lean. My Konis do a great job with the setup... I've played a lot with their adjustability over the past years to my satisfaction... granted, today there are other choices in preferred multi-adjustable shocks, and I'm actually considering them.

For the A-bodies, being lighter than the b/e bods, in my opinion from those i know with A-bods, a~1.14-1.18 TB is not a harsh ride at all on the street/hwy.

I've said many times before... don't be afraid of larger TBs... you'll realize any increase made over the factory stock size will be an improvement, then... if you start small you'll only come to realize that you probably should've gone larger.

If driving over rough roads/surfaces is the norm, then use a little softer TB (1.0~1.1), but if the typical and intended driving is on smooth non-bumpy surfaces (AX parking lots/airports, W2W road race courses, etc), then step up.. progressively you'll see the desired results.

So who was the little darling that disqualified your tires? Does he drive a Camaro or a Mustang?

Actually it was the Goodguys tech guy. I can understand they have rules, but if the SCCA can figure out theses tires are 200 treadwear, Gooodguys should also...

Couldn't you have just googled it for him on your phone? It should have only taken about a minute or two.

Actually it was the Goodguys tech guy. I can understand they have rules, but if the SCCA can figure out theses tires are 200 treadwear, Gooodguys should also...