Any racers or autocrossers out there have any idea what the ideal operating temp of the Falken Azenis RT615 tires should be, or any tire for that matter. What would be considered a high temp or does it completely depend on the make and model. I have a *****in pyrometer that measures outside, middle, and inside temps of all 4 tires. It's great for seeing if you have too much air or not enough, if you have camber issues, etc. But I was curious as to what tire temps should be when running hard. Any ideas?

 

a little off topic, but I am happy to see someone read tire temps, so I have a question for you.
given the proper tire temp readings, high to low - inside to outside, are you able to get much heat into the inside rear tire?


which leads me to suggest the optimum tire temp is somewhere below greasy. iow, drive em till they sweat and then back off. or i suppose a really good driver may just be kind enough to them to not reach that point. in any event you will reach that point before you have a chance to measure the tire temp.

what kind of **** in meter do you have? i have to get out and run around the car like a Chinese fire drill.

before i started measuring temps my brembos were red, it was the quick stops to take readings without extra cool down driving that "burned" them.

 

Do you mean the inside of the rear tires or are you referring to the actual inside rear tire on say a mainly counter clockwise track or vice versa?

I want to know what the recomended temps are so I can see if it's actually the tire getting greasy that's causing some sliding or if it's just the make-up of the tire. I have a feeling it's the tire. After I bought these Falken RT615's I noticed that Falken advertises them on a lot of drift ads so I'm starting to think that the sliding is part of their design. But I was getting some 220+ temps so i wasn't sure if I was overheating them or if that's their recomended op. temps.

 

Oh yeah, the pyrometer is a Longacre with a 10 bank memory function.

 

well I was wondering if you were able to get much heat into the rear tire that is on the inside of the corner. from memory I was getting a spread of about 40 degrees against the outside front.

can't help with the tire choice, from what I can read here though, the Falken's are a better deal than the stock tire, not an improvement

 

The last time I took temps my aim was to see what my tire pressures where doing, I have since made an adjustment but haven't yet tested it. Here were my readings...

LF RF
Out Center Inside Inside Center Outside
174 180 179 205 205 190

LR RR
Out Center Inside Inside Center Outside
150 158 157 164 168 156


For those that read this and don't understand, the center temp. should be the average of the Outside and Inside temps. If it's too high, you have to much air, too low, to little.

The Outside & Inside temps will tell you what your alignment is doing; IE my inside temps are higher therefore I'm running too much negative camber. If my Outside temps where higher it would mean that I wasn't running enough negative camber. Ideally if everything is dialed in just right your temps would be the same across the tire... this never happens by the way

 

looks pretty darn good. maybe a bit to much tire pressure. I got the feeling the temps should run like yours only a bit less in the center.

I'm guessing it was a cool day, or you did a long cool down lap.

from what I have gathered your camber looks good, my temps are along the same lines and the car feels really nice.
i might have a bit more temp in the rear.
would you mind telling us in what direction your corrections went? more rebound?

 

I've been working on getting a good base tire pressure set-up, so I haven't made any changes to suspension yet. After those last readings I let out 1.5 psi front and back but I haven't had time to test it out yet. I just received some new springs too so I'll dive into the suspension after i get them installed.