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LostMy65 · 04-20-2021, 10:13 AM

Here's a rpm to tire size chart that might help.
Ideal is in the orange area. It's based on a 1:1 transmission. No OD.

04-20-2021, 10:13 AM	#37
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Dually Wheels--Teach me! Here's a rpm to tire size chart that might help. Ideal is in the orange area. It's based on a 1:1 transmission. No OD. Attached Images __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035