CarSpecsHQ

295/35R19 vs 345/30R19

345/30R19 is a safe swap for 295/35R19 by the usual ±3% rule: the diameter differs by +0.07%.

19" rim
295/35R19 27.13" · 345/30R19 27.15" · drawn to scale

Side by side

295/35R19345/30R19Difference
Overall diameter27.13"27.15"+0.02" (+0.07%)
Section width295 mm345 mm+50 mm
Sidewall4.06"4.07"+0.01"
Rim19"19"same
Circumference85.2"85.3"+0.1"
Revs per mile743743-1
Ride height——+0.01"
Speedometer reads 60 mph60.060.0+0.0 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.0 mph

With 345/30R19 on a car calibrated for 295/35R19, the speedometer reads 60.0 mph when you're really doing 60, and the odometer under-counts by 0.1%.

Speedo showsActual speed
30 mph30.0 mph
45 mph45.0 mph
60 mph60.0 mph
70 mph70.1 mph
80 mph80.1 mph

Other sizes close to 295/35R19

Questions

Can I replace 295/35R19 with 345/30R19?

345/30R19 is a safe swap for 295/35R19 by the usual ±3% rule: the diameter differs by +0.07%.

What's the difference between 295/35R19 and 345/30R19?

345/30R19 is 0.02" taller and 50 mm wider; the sidewall is +0.01". At an indicated 60 mph you'd actually be doing 60.0 mph.

Will 345/30R19 fit on 295/35R19 wheels?

Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 345 mm tire and the fender clearance.