Aftermarket Wheel Sets

[Scott A.]

I am looking to replace my 2006 Expy 17" OEM wheels with 20" wheels.
If so, do I need to have the speedometer/odometer adjusted so that speed/distance will be correct?
If so, how is this done specifically?
Thank you,
Scott A.

 

[walnuts4x4]

if you stick to a close overall size you will have no problem... and if it is off...look into a programmer so you can adjust speedo and get performance/mpg gains...

 

[GAINMOB]

you may but i think the diamater is almost the same...i use a programmer but you should be able to get it calibrated at a reputable mechanic shop or dealership even

 

[sgtowing]

Here you go Scott. The second line for each is for the 20" wheel
Stock Tire - 265/70R17 Tire 1 - 295/50R20
Section Width: 10.43 in 265 mm
Section Width: 11.61 in 295 mm

Rim Diameter: 17 in 431.8 mm
Rim Diameter: 20 in 508 mm

Rim Width Range: 7 - 9 in
Rim Width Range: 8 - 10.5 in

Overall Diameter: 31.60 in 802.64 mm
Overall Diameter: 31.61 in 802.89 mm

Sidewall Height: 7.30 in 185.42 mm
Sidewall Height: 5.80 in 147.32 mm

Radius: 15.80 in 401.32 mm
Radius: 15.80 in 401.32 mm

Circumference: 99.27 in 2521.4 mm
Circumference: 99.30 in 2522.2 mm

Revs per Mile: 658.2
Revs per Mile: 658.0

Actual Speed: 60 mph 100 km/h
Speedometer1: 59.9 mph 99.9 km/h

Speedometer Difference: - Speedometer Difference: 0.030% too slow
Diameter Difference: - Diameter Difference: 0.04%

 

[Scott A.]

Thank you.

 

[kekokid]

How bout 22" rims

 

[GAINMOB]

you'll need calibration

 

[sgtowing]

Why would he need calibration? A 305/40/22 is the exact same diameter as stock. The speedometer will be perfect and it should fit with no rub as long as the offset is correct.