Track results
 

2007 mercedes SLK280
228 hp at 6,100 rpm's
221 tq from 2,700 - 5,000 rpm's
A7
3:27 gears

First run:
42 psi front tires
32 psi rear tires

temp 61

60......2.263
330....6.247
1/8.....9.509
mph....75.57
1000...12.321
1/4.....14.685
mph....95.92

Second run:
40 psi front tires
30 psi rear tires

temp 53

60......2.208
330....6.155
1/8.....9.394
mph....76.10
1000...12.183
1/4.....14.529
mph....96.53

Third run:
36 psi front tires
28 psi rear tires

temp 52

60......2.257
330....6.241
1/8.....9.500
mph....75.78
1000...12.305
1/4.....14.663
mph....96.15

Race weight was 3408 lbs

Usually when I run one of the benz's in the past it has been a bit colder.

1st pass was just getting used to it
2nd pass was a bit better but it felt like it had a bit more in it
3rd run I spun a bit



I bet with a bit more practice.... and keeping the front tire psi the same on all runs I would have had a 14.4 run

Car goes back in early November so I wanted to make a couple passes in it.

Hmmmmm, what benz to get next????

Why would you keep lowering the psi in the fronts? If anything you should have been raising it....

- Justin

I wasn't..... it was happening due to temp dropping

So.....air them up? :nod:

- Justin