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215/45R18 vs 235/35R19 tire size

235/35R19 vs 215/45R18, diameter

-0.6% shorter

Speedometer
60.3 mph
At a true 60 mph
Diameter
25.48 in
Was 25.62 in
Revs per mile
792
Was 787
3% guideline
Within

Car built for 215/45R18, now on 235/35R19.

215/45R18 and 235/35R19

215/45R18 vs 235/35R19 tire size
Measure215/45R18235/35R19Difference
Width, mm215235+20
Sidewall, % of width4535-10
Rim, in1819+1
Section height, in3.813.24-0.57
Diameter, in25.6225.48-0.14 (-0.6%)
Circumference, in80.580.0-0.4
Revs per mile787792+4 (+0.6%)

Fitting 235/35R19 instead of 215/45R18

Within the usual 3% diameter guideline.

  • Needs 19 in wheels.
  • 20 mm wider. Check rubbing at full lock.
  • Shorter sidewall: 0.6 in less.

Cars with 215/45R18

Cars with 235/35R19

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