performancelaw
Full Access Member
What size tire can I run with out rubbing to reduce my rpms a little. 45 with od is 2500 is. 2200 ish with od @ 60 ish.
What size tire ?
- Thread starter performancelaw
- Start date
Brianedwardss
Registered User
235/85R16's in the rear is the biggest. I'm assuming right now you've got 215/85R16's. If so, you've got 30.4" tires, 235's are 31.7" tires. That's 4.4%, or 2200 rpm's becomes 2103 rpms.
HammerDown
Full Access Member
Keep in mind...a taller/wider tire will also cause more 'rolling resistance' thus using more fuel~energy to turn the tire.
performancelaw
Full Access Member
Yes I'm running the 215's in the rear.
GOOSE
Happy IDI'er
Toyo makes a 255/85r16 which is about 34" tall. They wear like iron and it shows in their price. Look at the M55 commercial tire lineup. Your truck is 2wd??
Don't think you will be stuffing these up front on a stock vehicle. Good luck
Look at the M55 commercial tire lineup. Your truck is 2wd?? Don't think you will be stuffing these up front on a stock vehicle. Good luck
performancelaw
Full Access Member
Toyo makes a 255/85r16 which is about 34" tall. They wear like iron and it shows in their price.
yes I'm 2wd
Brianedwardss
Registered User
235/85's is the biggest that will fit on the front, and they are the tallest that won't rub on the rear of a '94 drw f350. The 255/85's work on the newer 4wd superduty's ('99+) with a small spacer, and they fit up front on those trucks.
performancelaw
Full Access Member
I'm running 245/75/16 in the front. That's how truck was when I got it
Brianedwardss
Registered User
Should also add that last fall I tried shoving 255/85's on the front of my 2wd 88 f350, and they didn't fit. 265/75r16 was the biggest I could throw up front (same height as a 235, just wider)
Brianedwardss
Registered User
245/75's are a 30.5" tire, they're a good combo with 215/85's on a dually cause the 245's are a touch wider than 215's, and work well up front. Kind of like 265/75's are good on the front of a dually with 235/85's in the rear.
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