Live........something I don't think has been mentioned......if your drive to the track is a significant stretch, you need to take em way up (say 36/44) or you'll burn em up on the highway.........A rough ride yes, but you'll have a bit more tire when you get there

 

The outside edge of my rear tires are wearing fine - just wear the edge, not the sidewall. But I usually cord the insides after 2 DE's and have a lot left of the outside. I have the RUF Coilover suspension on my car, and run 315/30/18's in the rear. I need to pull out my last alignment sheet to confirm the latest specs I am trying, but I think rear is at -2 and -1.5 in the front (GT3 Control Arms with shims). I do run 44 lbs in the rear on the street to try even out the track wear. Fronts probably last me 8 or so track days. Any suggestions on getting more wear from the insides on the rear??

 

Not an expert, but sounds like the usual camber vs understeer dilemna. Had the same issue on my 355, the inside gets bald way sooner than the outside, but reducing camber results in a huge increase of understeer.

 

Whirls: Does your suspension have remote reservoir Bilsteins or is it the more standard Ruf Coilovers?

I have a customer with a 2004 Ruf RGT and we had to relaxe the rear camber on his car to -1.75 degrees to keep from destroying the insides of the rear tires driving back and forth to the track.

Another thing, does you car have a limited slip differential? High horsepower 996 Turbos can easily smoke the inside rear tire coming off slow corners.

 

The suspension is the standard coilovers setup (R96 300 300 50). I will have them check the rear camber and see where its at - I'm pretty sure it is at -2, so maybe I will bring it down to -1.75 to see if that helps. I haven't done anything to the differential - its stock AWD. Can you put a limited slip in a AWD car or would I have to switch it to RWD? Any idea what that would cost, or how much is involved?? Thanks a lot for the help!!!

 

Sorry for the delay. We're doing last minute prep work for the One Lap. We're leaving for Indiana tomorrow!

A limited sllip can be added to your standard gearbox without converting to RWD as long as the final drive ratio remains stock so that it matches with the front differential. We have added a limited slip to the One Lap car and it really helps it getting off the corner. Cost varies depending on the current state of the gearbox with respect to wear. I would also recommend updating to all the easily upgradable GT2 components like syncros and shift forks. The pump and cooler modification is very expensive and may not be worth it due to cost.

 

Great tires, but I've worn through them significantly in only 4K miles. I'll be putting on Toyo T1R's next.

 

I'm considering picking up the MS Cup tires to put on my OEM wheels for DE track events, especially after I pick up a LSD. I go to BMW & PCA DE track event in So Cal and Las Vegas so the outside temps run from 60-70 in the early spring and late fall and go as high as 100-110 in the summer. I know that once the tires are warmed up they have better traction, but my question is once they are warmed up do they give you as much feedback (i.e. squeeling) as PS2 street tires in hard cornering to know you are approaching a loss in traction?

I have 5 DE track event under my belt so I still consider myself a decent novice at this point. Are the MS Cup tires meant for better skilled/seasoned track guys (i.e. are they more dangerous in the hands of the less experienced track guys than street tires when warmed up and on a hot track in dry conditions)??? Are the MS Cups the best Cup tires out on the market?

 

Which is better Michelin Cups or Hoosier R6's? Are there any road racing slicks for 19' wheels?