Will 5th gen wheels fit your 2nd gen Ram?

[Mopar1973Man]

7 hours ago, Evan said:

I just went from 32ish to 37ish tire and saw no increase in egt.

 

I went from 265/75 R16 (31.6") to 245/75 R16 (30.5") now my 55 MPH EGT's are about 450 to 500°F. About 100°F drop having the final ratio of 3.69:1. As you can see a cruising MPG of close to 30 MPG. Where my good 28.04 MPG high mark comes from...

Edited December 19, 2021 by Mopar1973Man

[Sycostang67]

When my truck was stock I never noticed an increase in EGT when I was upsizing tires.  I was doing fine with my 33's until I swapped the turbo and injectors and then everything was getting too hot too quick.  The Quad helped and going back to stock tires helped as well.  It also made the truck feel quicker and all around more pleasant to drive again.  I do miss the meaty look of big tires though.    

[Mopar1973Man]

22 hours ago, Sycostang67 said:

It also made the truck feel quicker and all around more pleasant to drive again.  I do miss the meaty look of big tires though.

 

Only way to get back there is change all the gearing to 4.10. Then you can go with bigger tires but you'll still lose because 35 to 37 inch tires are going to be heavy. Rotational mass and then just getting the clearance right to keep from rubbing.

 

This is why when I hunt for a street race I always look for the big 37 inch tires and take them on. I always win. I'm quicker and have the least amount of loss of power to the road. Bigger tires typically mean to me most amount of loss, typically to high geared (lower than 3.55 ratio), rotational mass is higher, and EGT's become a limit on the other driver. I can power right through. 

 

The ONLY thing big tires are good for is floating on mud or deep snow. That's it!

Edited December 21, 2021 by Mopar1973Man