Mike
Thanks for the info on your gears. From the chart it looks like your stock tires would have been about 29". With 3.73 gears that would have put you about 2800rpm in 3rd gear. With the 31.6" and 4.10 gears that you switched to, you would have been at 2850rpm. Looks like a fairly even swap. Did you notice any difference in performance or mpg after making the swap. Just trying to understand how much the wieght of the larger tire comes into play.
---------- Post added at 08:18 PM ---------- Previous post was at 08:12 PM ----------
Stephen
Yea I know, 315/70R17's are 34.36" tall and 12.4" wide and 325/70R17's are 34.91" tall and 12.8" wide acccording to all the coversion formula's available on the internet. I was just talking in terms of 315 and 325 to cut down on typing.
---------- Post added at 08:27 PM ---------- Previous post was at 08:18 PM ----------
Not really fearing anything, just don't want to spend $2200 on a regearing and then be disappointed at the results. What I'm looking for is the best balance between mpg and performance.
Years ago when nobody was worried about gas prices, you used to see trucks come from the factory with low gearing that would pull stumps. The only problem was they got worse than terrible gas mileage and they wouldn't run more than about 75mph top end on the interstate. See where I coming from.
Thanks for the info on your gears. From the chart it looks like your stock tires would have been about 29". With 3.73 gears that would have put you about 2800rpm in 3rd gear. With the 31.6" and 4.10 gears that you switched to, you would have been at 2850rpm. Looks like a fairly even swap. Did you notice any difference in performance or mpg after making the swap. Just trying to understand how much the wieght of the larger tire comes into play.
---------- Post added at 08:18 PM ---------- Previous post was at 08:12 PM ----------
Stephen
Yea I know, 315/70R17's are 34.36" tall and 12.4" wide and 325/70R17's are 34.91" tall and 12.8" wide acccording to all the coversion formula's available on the internet. I was just talking in terms of 315 and 325 to cut down on typing.
---------- Post added at 08:27 PM ---------- Previous post was at 08:18 PM ----------
IMO, Don't fear the gear. 35's and 4.88's.
Not really fearing anything, just don't want to spend $2200 on a regearing and then be disappointed at the results. What I'm looking for is the best balance between mpg and performance.
Years ago when nobody was worried about gas prices, you used to see trucks come from the factory with low gearing that would pull stumps. The only problem was they got worse than terrible gas mileage and they wouldn't run more than about 75mph top end on the interstate. See where I coming from.