CarSpecsHQ

295/30R19 vs 295/35R18

295/35R18 is a safe swap for 295/30R19 by the usual ±3% rule: the diameter differs by +0.62%.

19" → 18"
295/30R19 25.97" · 295/35R18 26.13" · drawn to scale

Side by side

295/30R19295/35R18Difference
Overall diameter25.97"26.13"+0.16" (+0.62%)
Section width295 mm295 mm0 mm
Sidewall3.48"4.06"+0.58"
Rim19"18"-1"
Circumference81.6"82.1"+0.5"
Revs per mile777772-5
Ride height——+0.08"
Speedometer reads 60 mph60.060.4+0.4 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.4 mph

With 295/35R18 on a car calibrated for 295/30R19, the speedometer reads 59.6 mph when you're really doing 60, and the odometer under-counts by 0.6%.

Speedo showsActual speed
30 mph30.2 mph
45 mph45.3 mph
60 mph60.4 mph
70 mph70.4 mph
80 mph80.5 mph

Other sizes close to 295/30R19

Questions

Can I replace 295/30R19 with 295/35R18?

295/35R18 is a safe swap for 295/30R19 by the usual ±3% rule: the diameter differs by +0.62%.

What's the difference between 295/30R19 and 295/35R18?

295/35R18 is 0.16" taller and 0 mm wider; the sidewall is +0.58". At an indicated 60 mph you'd actually be doing 60.4 mph.

Will 295/35R18 fit on 295/30R19 wheels?

No — 295/30R19 needs a 19" wheel and 295/35R18 a 18" wheel. This is a plus/minus-size swap that changes wheels too.