New tune for slightly larger wheels?
#1
Bullitt Member
Thread Starter
Join Date: August 2, 2005
Posts: 264
Likes: 0
Received 0 Likes
on
0 Posts
New tune for slightly larger wheels?
I've got a set of 275/35ZR20s coming for all four. They're .4" larger than stock.
Do I need a new tune? Or is this something I can adjust myself in the tuner?
Do I need a new tune? Or is this something I can adjust myself in the tuner?
#2
As long as you stay within 3% of the overall tire diameter of the factory tires, you should be OK. If you go outside the 3% rule, most manufacturers say your ABS and traction control could be compromised.
#4
Mach 1 Member
Join Date: November 29, 2005
Location: Chicagoland
Posts: 809
Likes: 0
Received 0 Likes
on
0 Posts
As far as a tune, you would only need it if you're concerned about your speedo being 1.5% low. When you're going 70, it will say you're going 71. But then again, if you drive 10,000 miles, your odometer will say you went 9,850. Another effect it will have is on your final drive ratio: your 3.55 will be a 3.49. Goodbye acceleration! Just kidding...
#7
Team Mustang Source
You'll need to compare revolutions/mile between the old and new tires, then make the adjustment in the tuner (at least that's all I had to do in the Predator).
#8
Mach 1 Member
Join Date: October 20, 2005
Location: Honolulu, Hawaii
Posts: 874
Received 0 Likes
on
0 Posts
you can adjust it yourself in the sct xcalibrator. i saw the option on the tuner, but i didnt go into the menu. something about measuring the distance for the revolution of the tire.
Thread
Thread Starter
Forum
Replies
Last Post
MRGTX
2015 - 2023 MUSTANG
5
7/21/15 02:08 PM