Your Thoughts on Mandating 200+TW "Street Tires" in Improved Touring?

[XelderX]

I'll be at the Solo National Championships in September. If shaving street tires got you any gains someone would be doing it. I've been running them for two years and haven't seen anyone shaving them in that time. People were shaving the old Toyos, but those aren't really used anymore. I'll be there on Bridgestone RE71s with just a few runs on them to scrub them in. I suspect the 700 or so other street tire competitors will be on unshaven tires too.

[downingracing]

I don't know autocross, but I'm guessing the heat and beating tires take are different from road racing. So what works for autocross may not work for road race. If this street tire mandate becomes the rule, it will be some time before anyone shares data on what works (shaving/heat cycles) for each tire brand. Racers dont always share when an advantage is on the table.

[XelderX]

I don't know autocross, but I'm guessing the heat and beating tires take are different from road racing. So what works for autocross may not work for road race. If this street tire mandate becomes the rule, it will be some time before anyone shares data on what works (shaving/heat cycles) for each tire brand. Racers dont always share when an advantage is on the table.

Overheating the front tires in 60 seconds is pretty common in my Corvette. We compete a lot on concrete which generates more grip. Think ambient to 160* in a minute. I would love to have straights as long as most road courses have to help manage tire temperature. I think the street tires will be the same or easier to make last on road courses.

[XelderX]

Here is one issue that I'm not happy about and it could skew people's data with regards to street tires. If you run street tires on a track with a lot of race tire rubber laid down the track will feel "greasy". The race tire rubber and street tire rubber don't work well together. Basically the street tires will perform better on a green track than one with a lot of race tire laps on it.

[downingracing]

Here is one issue that I'm not happy about and it could skew people's data with regards to street tires. If you run street tires on a track with a lot of race tire rubber laid down the track will feel "greasy". The race tire rubber and street tire rubber don't work well together. Basically the street tires will perform better on a green track than one with a lot of race tire laps on it.

That's a pretty big concern given that every other class running a race weekend will be on at least r-conp if not full slicks.

[bonespec]

Here is one issue that I'm not happy about and it could skew people's data with regards to street tires. If you run street tires on a track with a lot of race tire rubber laid down the track will feel "greasy". The race tire rubber and street tire rubber don't work well together. Basically the street tires will perform better on a green track than one with a lot of race tire laps on it.

Happens at the drag strip as well. "Street tires" or drag radials will pull the rubber up from the starting line leaving bald spots. Had a nice chat (and beers!) with Bill Bader Jr at Norwalk, now Summit Raceway during a Sport Compact event. YEARS ago. Not sure if the newer drag radial compounds, like the street tires SCCA racers now use, play along better. Need a cool Friday night to go check them out