Topic: Tire size arguments

[sharpxmen]

weight and air resistance probably accounts for 90% of gas mileage and the rest maybe for rolling resistance (if that) - what I mean is that 31 vs 33 rolling resistance is probably insignificant compared to the added weight and aerodynamic loss with larger tires. Not so sure if the few hundred rpm would make a difference in mpg, in my case it didn't - that being said it's also a matter of driving style, few take into account that going to larger tires make you change your driving style a bit which can result in gains mainly in city driving (means you accelerate slower and thus running at less speed between stops which might result in less fuel used).

all this of course with same rims, psi, tire width and gears so we compare apples to apples.

[Mozman68]

80-90 miles every day on 37" MT's...." It is better to look good than to feel good, my friend..."

[Jeffy]

80-90 miles every day on 37" MT's...." It is better to look good than to feel good, my friend..."

Isn't that what the flatbillers/Bro's say? 

[Mozman68]

[Jeffy]

I don't think the kids will remember that.

[jfrabat]

-with 4:88 gears, I think you are better off with 33's than 31's.


I get around 15 MPG right now, would I get a better MPG's going to a 33's?

No.  I had 4.88s with 31's before moving to 33's.  31's gave better mpg.

[bootguy]

New tires on hold until I rebuild the transfer case and replace the rear end.  Thank you though for the insight and food for thought.

[Mozman68]

I don't think the kids will remember that.

I barely remember....

[chrisfranklin]

 I am running Firestone Destination MT's (33x12.50x15).  They are a really great all-around tire with great treadwear performance.
-with 4:88 gears, I think you are better off with 33's than 31's.

I use the Destination MTs (31") also.  Have had them for going on 5 years and they've held up great even with mostly street use.   Knowing me I'll probably find a reason to swap to a set of 33MTs long before my 31" Destination MTs every wear out.  Good all-around tires.