215/70R16 vs 225/65R17Tire Size Comparison

Safe

The 2.4% diameter difference is within the accepted 3% tolerance.

215/70R16707mm dia225/65R17724mm dia+8.4mm

Comparison Details

Overall Diameter707.4 vs 724.3 mm (+16.9 mm)
Diameter Difference+2.39%
Section Width215 vs 225 mm (+10 mm)
Sidewall Height150.5 vs 146.3 mm (-4.2 mm)
Circumference2222.4 vs 2275.5 mm
Clearance Change+8.4 mm
Speedometer Error+2.39%
Revs/Mile724 vs 707

Speedometer Correction

When switching from 215/70R16 to 225/65R17, your speedometer will differ from actual speed.

SpeedometerActual SpeedDifference
30 km/h30.7 km/h+0.7 km/h
40 km/h41.0 km/h+1.0 km/h
50 km/h51.2 km/h+1.2 km/h
60 km/h61.4 km/h+1.4 km/h
70 km/h71.7 km/h+1.7 km/h
80 km/h81.9 km/h+1.9 km/h
90 km/h92.2 km/h+2.2 km/h
100 km/h102.4 km/h+2.4 km/h
110 km/h112.6 km/h+2.6 km/h
120 km/h122.9 km/h+2.9 km/h
130 km/h133.1 km/h+3.1 km/h

Vehicles Using These Sizes

Vehicles with 225/65R17

Individual Tire Size Details

Practical Guidance

Switching from 215/70R16 to 225/65R17 is within the industry-accepted 3% diameter tolerance. Your speedometer, ABS, and traction control should function normally. Note: these sizes require different rim diameters (16" vs 17"), so you will need different wheels.

The 3% diameter tolerance is a widely accepted industry guideline referenced by the ETRTO and most vehicle manufacturers. When in doubt, consult your vehicle's owner's manual or a qualified tire professional. For U.S. tire safety standards and recalls, see the NHTSA Tire Safety page.

Frequently Asked Questions

Safe. The overall diameter differs by 2.39%, width changes by 10mm.

Speedometer error will be 2.39%. At an indicated 100 km/h, actual speed is about 102.4 km/h.

Ground clearance changes by +8.4mm per side.