If I recall correctly, the pulldown table does not go up to 335 for tire size, so can you enter the tire size manually?
Lonnie
If I recall correctly, the pulldown table does not go up to 335 for tire size, so can you enter the tire size manually?
Lonnie
2002 EB Coupe, MN6
Xtreme TTi Twins @8psi, Dual A-pilar gauges - fuel&boost, x-pipe, Borla Straight Twin Oval from Cats on back, Hurst Short Throw, CCW 3 piece rims - 18x9.5/275-35 and 18x11.5/335-30 Pilot Sports
Drive it like you stole it!!!!!
Just type in 335 into the drop own list.Originally Posted by lplott
Regards
Paul
Before asking for help, please read this.
Or you could do the more accurate thing and measure the tire height with a measuring tape. My stock tires 275/40/17 are really 25 inches tall...not 25.66 inches.
The most accurate way to set up your tire/speedo calculations is to measure the rolling circumference and back-calculate the appropriate diamater as follows:
1. Inflate tire to the correct pressure.
2. Mark the tire wall at the bas of the tire.
3. Mark the road at the base of the tire.
4. Roll the vehicle until the mark in the tire has completed exactly one revolution.
5. Mark the road again.
6. measure the distance between the two marks on the road. That is the rolling circumference of your tire.
7. Calculate the correct tire diameter using this formula:
diameter = rolling circumfernece/pi
where pi = 3.1415926536
i.e. if your rolling circumference was 83.25 inches, then your tire diameter will be 83.25/3.1515926536 = 26.5 inches.
Regards
Paul
Before asking for help, please read this.