18" vs 20" overall tire diameter the same?
18" vs 20" overall tire diameter the same?
Just as the title says are they the same on the fx4/lariat with stock tires?
Thanks
Thanks
Last edited by blackjack8900; May 22, 2009 at 01:50 AM.
Then you can use this tool to see the overall diameter -
Discount Tire Size Calculator
The trucks I looked at around here had either:
275/65-18 diam 32.07"
275/55-20 diam 31.91"
Yeah, my dad is looking at Fx4's and he would like 18"s for the fact you have more side wall but most have the 20's on them.....Both look good IMO.
The reason I asked the diameter is because a dealer would be willing to swap the 20's for 18's and give him half the price back of what the 20's list for on the sticker which is 595.00. But they said they need to calibrate the speedo then..So I wanted to check on the overall tire diameter to see how much of a difference there is really is......I know truck's that come with 20's stock has a 18" tire for the spare....that's why I frigured they were very close if not the same.
The reason I asked the diameter is because a dealer would be willing to swap the 20's for 18's and give him half the price back of what the 20's list for on the sticker which is 595.00. But they said they need to calibrate the speedo then..So I wanted to check on the overall tire diameter to see how much of a difference there is really is......I know truck's that come with 20's stock has a 18" tire for the spare....that's why I frigured they were very close if not the same.
Last edited by blackjack8900; May 22, 2009 at 12:33 PM.


