295/70R18 tire size

A 295/70R18 tire is 34.3 inches (870 mm) tall and 11.6 inches (295 mm) wide, and fits a 18-inch wheel. In inch sizing it is about a 34.3x11.6R18.

Overall diameter34.26in870 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
315/70R17	34.4″	+0.3%	12.4″	8.7″	17″
275/65R20	34.1″	−0.5%	10.8″	7.0″	20″
295/60R20	33.9″	−0.9%	11.6″	7.0″	20″
315/75R16	34.6″	+1.0%	12.4″	9.3″	16″
285/75R17	33.8″	−1.3%	11.2″	8.4″	17″
285/75R18	34.8″	+1.7%	11.2″	8.4″	18″
35x12.50R15	35.0″	+2.2%	12.5″	10.0″	15″
35x12.50R17	35.0″	+2.2%	12.5″	9.0″	17″
35x12.50R18	35.0″	+2.2%	12.5″	8.5″	18″
35x12.50R20	35.0″	+2.2%	12.5″	7.5″	20″
35x12.50R22	35.0″	+2.2%	12.5″	6.5″	22″
35x12.50R24	35.0″	+2.2%	12.5″	5.5″	24″

Within 3% of the original diameter is the range most tire shops treat as a direct swap. Check load index and clearance too.

295: Section width: 295 mm (11.6 in) from sidewall to sidewall.
70: Aspect ratio: the sidewall is 70% as tall as the tire is wide, 207 mm (8.1 in).
R: Radial construction, used by almost every modern tire.
18: Fits a 18-inch wheel.

295/70R18 is about 34.3 inches tall and 11.6 inches wide, on a 18-inch wheel, roughly a 34.3x11.6R18 in inch sizing.

Yes. At 34.3 inches it is sold and fitted as a 34-inch tire.

315/70R17, 275/65R20, 295/60R20 are the closest common sizes, all within 0.9% of its diameter, so the speedometer stays close to accurate.

35x12.50R18 is 2.2% taller, so at an indicated 60 mph you would really be doing 61.3 mph. Compare 295/70R18 and 35x12.50R18.

About 589 per mile (366 per km), from a 107.6-inch circumference.