I just thought I'd give out this bit of information to you guys.

OEM: 3.55 gear 255/70-17 tires (31.06" dia)

MOD: 3.55 gear 305/70-17 (33.81" dia)

255/70-17 ~ 305/70-17
Miles Per Hour
5 ~ 5.44
10 ~ 10.89
15 ~ 16.33
20 ~ 21.77
25 ~ 27.21
30 ~ 32.66
35 ~ 38.10
40 ~ 43.54
45 ~ 48.98
50 ~ 54.43
55 ~ 59.87
60 ~ 65.31
65 ~ 70.75
70 ~ 76.20
75 ~ 81.64
80 ~ 87.08
85 ~ 92.53
90 ~ 97.97
95 ~ 103.41
100 ~ 108.85

 

Thus your gearing is now 3.26.

pretty consistant readings. Did you do that with a GPS, or a calculator? Just curious.
Chris

 

Well a gear that high scares me but honestly I have not noticed a difference. It acutally seems better.

I used a formula, not a "while driving" unit.