CarSpecsHQ

295/35R19 vs 235/50R18

235/50R18 is a safe swap for 295/35R19 by the usual ±3% rule: the diameter differs by +0.45%.

19" → 18"
295/35R19 27.13" · 235/50R18 27.25" · drawn to scale

Side by side

295/35R19235/50R18Difference
Overall diameter27.13"27.25"+0.12" (+0.45%)
Section width295 mm235 mm-60 mm
Sidewall4.06"4.63"+0.56"
Rim19"18"-1"
Circumference85.2"85.6"+0.4"
Revs per mile743740-3
Ride height——+0.06"
Speedometer reads 60 mph60.060.3+0.3 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.3 mph

With 235/50R18 on a car calibrated for 295/35R19, the speedometer reads 59.7 mph when you're really doing 60, and the odometer under-counts by 0.4%.

Speedo showsActual speed
30 mph30.1 mph
45 mph45.2 mph
60 mph60.3 mph
70 mph70.3 mph
80 mph80.4 mph

Other sizes close to 295/35R19

Questions

Can I replace 295/35R19 with 235/50R18?

235/50R18 is a safe swap for 295/35R19 by the usual ±3% rule: the diameter differs by +0.45%.

What's the difference between 295/35R19 and 235/50R18?

235/50R18 is 0.12" taller and 60 mm narrower; the sidewall is +0.56". At an indicated 60 mph you'd actually be doing 60.3 mph.

Will 235/50R18 fit on 295/35R19 wheels?

No — 295/35R19 needs a 19" wheel and 235/50R18 a 18" wheel. This is a plus/minus-size swap that changes wheels too.