Changing the rim size

Tiny
KATEANNETTE
  • MEMBER
  • 1999 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 116,000 MILES
Mine has 16 in wheels and if I put 20in rims on it will it through off my speedometer
Thursday, February 17th, 2011 AT 2:06 AM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
The wheel size is not the factor that is going to affect speedometer. What will determine the affect, is the overall tire diameter. If you used a 20" rim with a tire size that closely matched the O.E. Diameter, the affect would be minimal if any.
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Thursday, February 17th, 2011 AT 3:17 AM

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