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Sidewall

285/30R19

285 mm across the tread, a sidewall 30% of that — 86 mm — on a 19-inch rim. That puts the whole wheel at 25.7 inches tall.

85.5 mm sidewall654 mm · 25.7"
Sidewall
3.37"
86 mm
Overall
25.7"
653.6 mm
Circumference
80.8"
2.053 m
Revs per mile
784
per minute at 60 mph

What it needs to sit on

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It mounts on a rim between 8" and 10.5" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 273 mm across at the narrow end and 298 mm at the wide one. Written the way lift kits and wheel wells are, it is a 25.7×11.2R19 — tall by wide, in inches.

What goes wrong on this size

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1 drivers have filed a complaint. 0 of them ended in a crash, and nobody was hurt. Nobody died.

1 of them name what let go, and it is most often tread separation. Michelin is named more than any other brand.

What let goComplaints
tread separation1

Where the wheel is named, 1 of 1 were on the front — the end that steers.

What fits instead

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Same 19-inch rim, height within 3%. Past that the speedometer starts lying and things begin to rub.


SizeHeightRide heightSpeedo reads 60, you doCompare
275/30R1925.5" -0.9 %-3.0 mm59.4 mphside by side
295/30R1926.0" +0.9 %+3.0 mm60.6 mphside by side
265/30R1925.3" -1.8 %-6.0 mm58.9 mphside by side
305/30R1926.2" +1.8 %+6.0 mm61.1 mphside by side
265/35R1926.3" +2.2 %+7.3 mm61.3 mphside by side
305/25R1925.0" -2.8 %-9.3 mm58.3 mphside by side

Same height, different rim

Bigger rim, same overall height. Sharper steering, harsher ride, and far less rubber between your wheel and the next pothole.


285/35R18100 mm sidewall — 17% more
275/35R1896 mm sidewall — 13% more
305/25R2076 mm sidewall — 11% less
315/30R1895 mm sidewall — 11% more
255/30R2077 mm sidewall — 11% less
255/40R18102 mm sidewall — 19% more

Tires graded in this size

Longest-lasting tread first. The grade is set by the maker and checked by regulators.


TireTreadwearWet grip
CONTINENTAL ContiSportContact 5P280AA
Dunlop SPORT MAXX RACE80A

If you fit something taller

A taller tire covers more ground per turn, so the needle reads low and the odometer counts short. Over ten thousand miles on the dial, the last column is what you really drove.


Fitted insteadReads 30Reads 50Reads 70Real miles per 10,000 shown
275/30R1929.7 mph49.5 mph69.4 mph9,908
295/30R1930.3 mph50.5 mph70.6 mph10,092
265/30R1929.4 mph49.1 mph68.7 mph9,816
305/30R1930.6 mph50.9 mph71.3 mph10,184
265/35R1930.7 mph51.1 mph71.6 mph10,222