[BadASSDakota500]

So I see most people are using 275/45-20's on their 20 wheels. I went to discounttire and used their tire calculator to figure out exactly. I used the stock size of 235/75-15 and then a couple variations...
If going 80MPH with stock tires this is what comes up with the larger size.
275/35-20=78.83
275/40-20=81.91
275/45-20=85.00

Stock diameter is: 27.99
275/35-20=27.58
275/40-20=28.66
275/45-20=29.74

So I am guessing that the 35 or 40 series are best? But every website I go to shows me 275/45...but I don't want to be off by 5MPH to the negatives...

 

[BadASSDakota500]

I think I may have found a very good reason to go to the 45 serious...about $15-$250 per tire...good enough reason for me to deal with the MPH differences!