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205/50R17 vs 235/45R17 tire size

235/45R17 vs 205/50R17, diameter

+1.0% taller

Speedometer
59.4 mph
At a true 60 mph
Diameter
25.33 in
Was 25.07 in
Revs per mile
796
Was 804
3% guideline
Within

Car built for 205/50R17, now on 235/45R17.

205/50R17 and 235/45R17

205/50R17 vs 235/45R17 tire size
Measure205/50R17235/45R17Difference
Width, mm205235+30
Sidewall, % of width5045-5
Rim, in17170
Section height, in4.044.16+0.13
Diameter, in25.0725.33+0.26 (+1.0%)
Circumference, in78.879.6+0.8
Revs per mile804796-8 (-1.0%)

Fitting 235/45R17 instead of 205/50R17

Within the usual 3% diameter guideline.

  • 30 mm wider. Check rubbing at full lock.

Cars with 205/50R17

Cars with 235/45R17

What this cannot tell you

Diameter within 3% is a common shop guideline, not a maker spec.

Load index, offset and clearance are not in this data.

How values are checked