I,m going to Buttonwollow for the first time this coming Saturday ( #13 CW )and would like input on how hard it is on brakes compared to other So Cal tracks, specifically S.O.W. and Cal Speedway infield? I have measured 5/32 on my pads ( I think 8/32 is new? ). Car is stock engine. Will 5/32 be enough? Thanks in advance for the input.

 

Well I've never been to Buttonwillow but here is a map of #13 CW:

 

I've never been on the track with my S, but I went there once for speedtrial with my mini cooper. My brakes held up pretty well, but the heat there was EXTREME. Be careful driving on the way home, cuz I ended up needing to brake hard once, and the ABS kicked in a lot earlier than it usually would. I would say to bring a spare set of pads, just in case you run out of pad. But indeed, it's a very fun track

 

SOWS is harder on brakes IMO. There's only a couple of point where you brake hard at BW. The front straight before Sunrise or Sunset depending on direction, and the turn after the sweepers

 

I lost brakes on the front straight going into sunrise. I switched to race pads for ALL tracks after that.

 

Technically, you want to change pads and fiuld to reduce fad at any track. I've upgraded my pads and Dot 4 Motul brake fiuld for Sunday's event at Buttonwillow.