Well, I have mounted them on the stock rims, no spacers for the moment. Had the H3 out this past weekend and was impressed with the additional ease with which I could complete trails. I'll probably leave them as is.

 

 

Looks like they work well and they look good on your 3... How is the road noise?

 

Road noise isn't too bad. They're definitely louder than the stock tires, but quieter than BFG MT's. Somewhere in between? Slightly louder than the 305/50/20 Cooper MTZ's on my truck.

 

Think about buying alloy wheels if you do a lot of driving in the mountains or in stop-and-go traffic.alloy wheels are designed to encourage cool air flow over the brakes to prevent overheating.

 

Does anyone know of that maybe going with a potential wider tire can affect the MPG's and the shifting points of the transmission? I know it's another question, please don't think that I am hijacking this thread. There have been alot of great comments here and I thought it would be better here.

 

A wider tire can/should decrease mpg's. Shift points are based on RPM's, so not sure it will impact that.

 

Anything that exposes the tire to more air will increase drag and therefore reduce fuel economy.

As far as engine RPM at speed, that's a function of the tire circumference. You will see a corresponding reduction in torque at the wheel which will require more pedal for a given rate of acceleration. Also, added drag will require more pedal to maintain speed. More pedal means more downshifting. How much depends on how fast and aggressive you drive so it is hard to predict exactly, but it will down shift more.

I am running stock tires for the street and a set of 35" mudders for the trail so I can have the best of both worlds. When the factory tires wear, I'll get even milder all-seasons which will increase MPG's and performance all around on road.

Frank

 

While you are correct, the tires are still not affecting the shift points... The shift points will be the same, they will just come into play differently. So yes, when accelerating from 40 to 60, it may downshift more often than it used to with stock tires (b/c of additional RPM's required to move the vehicle), but the shift points are still at the same point, which is tied to the RPMs.

 

I have 18" stock rims what is the larges tire that I can put on them?
Thank You