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205/65R16 vs 235/50R17 tire size

235/50R17 vs 205/65R16, diameter

-0.9% shorter

Speedometer
60.5 mph
At a true 60 mph
Diameter
26.25 in
Was 26.49 in
Revs per mile
768
Was 761
3% guideline
Within

Car built for 205/65R16, now on 235/50R17.

205/65R16 and 235/50R17

205/65R16 vs 235/50R17 tire size
Measure205/65R16235/50R17Difference
Width, mm205235+30
Sidewall, % of width6550-15
Rim, in1617+1
Section height, in5.254.63-0.62
Diameter, in26.4926.25-0.24 (-0.9%)
Circumference, in83.282.5-0.8
Revs per mile761768+7 (+0.9%)

Fitting 235/50R17 instead of 205/65R16

Within the usual 3% diameter guideline.

  • Needs 17 in wheels.
  • 30 mm wider. Check rubbing at full lock.
  • Shorter sidewall: 0.6 in less.

Cars with 205/65R16

Cars with 235/50R17

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