gaffbro ( or anyone else ) - I know the S10's and prob. the Astro vans came with a relatively small tire ( not sure of the sizes ) , but right now , I'm running a 275/60/15 on the rear of my truck.The 2.8L S10 came with a 4.03 first gear and the 4.3L had a 3.50 first gear . How much difference will the tire size make in this case and which would be the better choice for my application ? Anyone have an answer ?
