Tires For Boxster S

[Sammy]

Originally Posted by racer_d

Check the rulebook!

Changing tires can affect the class you run in. An "R" comp tire can put you in an improved or modified class that, depending on what you have done to your car can put you at an extreme disadvantage. Many clubs use a treadwear rating of 140 as a guideline. Above 140=street tire. Below 140=competition tire.

I was worried about this as well but in all the events I've ran with SCCA my Victoracers didn't move me into a different class (kind of sort of but not really). In Chicago and Milwaukee SCCA the race tires make you a true AS. Before I put race tires on I would run "Street Tire" AS or "Street Tire" RWD. I'm pretty sure SCCA nationals is set up this way as well even thought I doubt anyone shows up without race tread.

This has been my experience so I'm hoping a SCCA rule expert can comment...

Of course there are autocross clubs outside of SCCA...

[John V]

Originally Posted by Sammy

I was worried about this as well but in all the events I've ran with SCCA my Victoracers didn't move me into a different class (kind of sort of but not really). In Chicago and Milwaukee SCCA the race tires make you a true AS. Before I put race tires on I would run "Street Tire" AS or "Street Tire" RWD. I'm pretty sure SCCA nationals is set up this way as well even thought I doubt anyone shows up without race tread.

This has been my experience so I'm hoping a SCCA rule expert can comment...

Of course there are autocross clubs outside of SCCA...

The National classing structure doesn't have any "street tire stock" classes like Milwaukee region (and others) do. Nationally, whether you run R-comps or regular (140+ treadwear tires) your Boxster is in A Stock.

My co-driver and I are signed up for the Milwaukee National Tour, you should show up and help us fill up A Stock with Boxsters!

[edevlin]

Quote:

"Four months ago I purchased the SP 9090 Dunlop tires. While driving home in the rain the other night I experienced severe hydroplaning. To my surprise; I noticed that my rear tires were completely worn out. I only have 2400 miles on the tires. I'm very disappointed with Dunlop tires... Has anyone else had wear problems with the 9090 tires?"

Originally Posted by Jetmd


I just got back from a road trip to Florida this week, 700+ miles each way. On the way back today there was a lot of rain down south, and I was suprised at how much my PS2's were hydroplaning. The rear tires have less than 4k on them and are showing less than 3/16" of tread. I have been trying to take it easy on this set of rears, but it looks like I will not get 6K out of them. BTW, the front set has 9K+ on them and is showing 1/4" of tread.

Ed