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  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech

Gear Ratio?

  • Thread starter Thread starter Luckyloke
  • Start date Start date Nov 25, 2016

Luckyloke

Member
Nov 24, 2016
15
4
13
Nov 25, 2016
#1
  • Nov 25, 2016
  • #1
Hey guys. I got an 05 GT Auto which means my rear end is 3.31 if i'm not mistaken. I just upgraded the wheels to 275/35r20. What gear ratio would that put me out now? I'm not sure how to do the math on that stuff.
 

Dino Dino Bambino

15 Year Member
Jun 13, 2007
1,672
89
79
Cyprus
Nov 26, 2016
#2
  • Nov 26, 2016
  • #2
The rear end gear ratio remains the same 3.31 but with the bigger diameter tires than stock, the gearing has become 1.5% taller.
 

Luckyloke

Member
Nov 24, 2016
15
4
13
Nov 26, 2016
#3
  • Nov 26, 2016
  • #3
So that puts me effectively rocking a 3.26 now right? ...alright well I guess it's time to do the 4.10s I was thinking about.
 

Luckyloke

Member
Nov 24, 2016
15
4
13
Dec 18, 2016
#4
  • Dec 18, 2016
  • #4
Actually ended up going 3.73 ftr
 
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