Another Tire And Wheel Question
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New User
Joined: Jan 2005
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Another Tire And Wheel Question
I have recently purchased a 2000 f-150 ext cab / Lariat. 4.6.... (I had a 1997 f-150 reg cab 4.6) I have noticed that the speedometer seemed to be off ( speed vs. rpm ) so I figured that I would start with the tires. The sticker inside of the door says that the truck is supposed to have 275/60R17sl tires on 17 x 7.5 inch rims....right now it has 265/70R16 tires on 16 x 7 inch rims. I need to get new tires soon, should I be trying to find some 17 inch rims at the same time,or is there not enough difference in the sizes to matter..any and all input welcome....thank you.
Junior User
Joined: Jan 2003
Posts: 79
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From: St. Louis
There should only be about 1/2 -3/4 " difference between the two tire sizes with the 265/70R16 being slightly larger. This will make the speedo/odometer slightly off but shouldn't make a big difference. I stepped up in tire size about 1 3/4 " and my speedo/odometer were off by exactly 1/10 mi. With the larger tire my speedo/odometer register .9 for each mile travelled so that when it says I am travelling 55 mph I am actually travelling 60.5 mph.Yours should not be nearly so drastic.
