Wheel Circumference measurement
03-12-2021, 04:34 PM
#1
Rennlist Member
Thread Starter
Wheel Circumference measurement
I sat in on the Cosworth presentation last night started at 23:30 my time and I made it 6hrs and fell asleep. The car has the ability to learn the tire circumference on its own via GPS however to speed up the process and to make it more exact the closer you can measure the tire circumference the better. This will also speed up the time it takes to memorize the tire cir.
I took measurements on my Michelin Rains as well as the new Hankook F200 slicks. I added my weight and had 10 gal of fuel in the car and air pressure at 19psi and 27psi and did a rolling check. I compared the measure here with a non stretching string check. I found the string was about 2% longer then the rolling check
The rolling check / String measurement
F200 slicks Michelin rains
F 1959mm 2002 mm F 2007mm 2048mm
R 2100mm 2144mm R 2135mm 2163mm
I took measurements on my Michelin Rains as well as the new Hankook F200 slicks. I added my weight and had 10 gal of fuel in the car and air pressure at 19psi and 27psi and did a rolling check. I compared the measure here with a non stretching string check. I found the string was about 2% longer then the rolling check
The rolling check / String measurement
F200 slicks Michelin rains
F 1959mm 2002 mm F 2007mm 2048mm
R 2100mm 2144mm R 2135mm 2163mm
Last edited by SmokinGTS; 03-12-2021 at 04:37 PM.
03-13-2021, 05:56 PM
#2
Rennlist Member
Useful info. I have only used the manufacturer's specs.... Thanks.
Did you try the 300/680R18 or the 280/680R18 Hankook?
Did you try the 300/680R18 or the 280/680R18 Hankook?
Last edited by Chris P Lewis; 03-13-2021 at 06:07 PM.
03-13-2021, 09:26 PM
#3
Rennlist Member
Thread Starter
No not yet this is the first set of tires on the car. Once I see how these work I may make a change on the next set.
03-14-2021, 09:18 AM
#4
Rennlist Member