245/70R17 vs 235/75R16 tire size comparison

Change either size and everything below updates.

Start from your car make, model, year

Make Model Year

Width/AspectRRim

DiameterxWidthRRim

Width/AspectRRim

DiameterxWidthRRim

Width in mm · aspect = sidewall height as a % of width · rim in inches

Flotation (LT) sizes, all in inches: overall diameter × section width, then rim

Within the usual 3% rule

−2.05% diameter

Most fitment guides accept up to 3%. Check clearance at full lock and full suspension compression before committing.

Needs 16″ wheels: this tire does not fit your 17″ rims.
10 mm narrower: check the tire is approved for your rim width.

Tires in 235/75R16

Check price on Amazon · 235/75R16 Best-rated 235/75R16 tires

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Measurement	245/70R17	235/75R16	Diff	%
Overall diameter	30.50″775 mm	29.88″759 mm	−0.63″	−2.1%
Section width	245.0 mm	235.0 mm	−10.0 mm	−4.1%
Sidewall height	171.5 mm	176.3 mm	+4.8 mm	+2.8%
Rim diameter	17″	16″	−1″	−5.9%
Circumference	95.83″2434 mm	93.86″2384 mm	−1.97″	−2.1%
Revolutions per mileturns per distance; drives the odometer	661411 /km	675419 /km	+14	+2.1%
Ride height change	—	—	−0.31″ −7.9 mm

Speedometer reading

Speedo shows

60mph

97 km/h

Actual speed

58.8mph

95 km/h

Overlay

245/70R17235/75R16

How to use the tire size calculator

Put your current tire size — width, aspect ratio and rim diameter — into the first form, then your desired size into the second. You’ll get the difference between the new and the old size, plus the speedometer reading difference and your actual speed on the new set. Both metric and flotation (LT inch) sizes are supported.

The calculator helps you decide whether a set of tires and wheels will fit your car. To compare tires by brand and model instead, use our tire comparison tool; to look up factory sizes, browse by car make.