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Sidewall

305/30R19

305 mm across the tread, a sidewall 30% of that — 92 mm — on a 19-inch rim. That puts the whole wheel at 26.2 inches tall.

91.5 mm sidewall666 mm · 26.2"
Sidewall
3.60"
92 mm
Overall
26.2"
665.6 mm
Circumference
82.3"
2.091 m
Revs per mile
770
per minute at 60 mph

What it needs to sit on

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It mounts on a rim between 8.5" and 11" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 293 mm across at the narrow end and 318 mm at the wide one. Written the way lift kits and wheel wells are, it is a 26.2×12.0R19 — 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 crack. Pirelli is named more than any other brand.

What let goComplaints
crack1

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
295/30R1926.0" -0.9 %-3.0 mm59.5 mphside by side
315/30R1926.4" +0.9 %+3.0 mm60.5 mphside by side
285/30R1925.7" -1.8 %-6.0 mm58.9 mphside by side
325/30R1926.7" +1.8 %+6.0 mm61.1 mphside by side
285/35R1926.9" +2.5 %+8.3 mm61.5 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.


315/25R2079 mm sidewall — 14% less
295/35R18103 mm sidewall — 13% more
325/25R2081 mm sidewall — 11% less
305/25R2076 mm sidewall — 17% less
305/35R18107 mm sidewall — 17% more
335/30R18101 mm sidewall — 10% more

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
295/30R1929.7 mph49.5 mph69.4 mph9,910
315/30R1930.3 mph50.5 mph70.6 mph10,090
285/30R1929.5 mph49.1 mph68.7 mph9,820
325/30R1930.5 mph50.9 mph71.3 mph10,180
285/35R1930.7 mph51.2 mph71.7 mph10,248