35×12.50R18 in inches

A 35×12.50R18 tire is 35.0″ tall and 12.5″ wide, and fits a 18″ wheel.

Diameter35.00″

Width12.50″

Sidewall8.50″

Drawn to scale. Nominal dimensions calculated from the size code.

Manufacturer data

How tall 35×12.50R18 tires really are

Heights published by BFGoodrich, General, Mickey Thompson and Toyo for all 17 tires in this size. Their published revolutions per mile work out to 33.5–34.0″ under load (below).

Real 35×12.50R18 tires measure 34.50–35.04″, against 35.00″ from the size code. Most run shorter than the size code (14 of 17).

Toyo Open Country M/T · 234.76–35.04″ −0.24″
General Grabber A/TX35.00″ +0.00″
General Grabber X335.00″ +0.00″
Mickey Thompson Baja Boss M/T34.80″ −0.20″
Mickey Thompson Baja Legend MTZ34.80″ −0.20″
Toyo Open Country R/T Pro34.80″ −0.20″
Toyo Open Country C/T34.76″ −0.24″
Mickey Thompson Baja Boss A/T34.60″ −0.40″
Toyo Open Country R/T Trail34.53″ −0.47″
Toyo Open Country A/T III · 234.53″ −0.47″
BFGoodrich All-Terrain T/A KO3 · 234.50″ −0.50″
BFGoodrich HD-Terrain T/A KT34.50″ −0.50″
BFGoodrich Mud-Terrain T/A KM334.50″ −0.50″
Mickey Thompson Baja Legend EXP34.50″ −0.50″

Each bar runs from the size code's 35.00″ (the orange line) to the model's published height. The track spans 1.0″. Where a model comes in several load ranges, the darker part shows its range of heights; the number after the name is how many versions it comes in.

Height under load33.5–34.0″

Published revs per mile (593–602) mean the tire rolls like a 33.5–34.0″ tire on the vehicle. Use this for speedometer calibration.

Weight spread61.3–81.4 lb

The lightest (General Grabber A/TX, LT E) is 20.1 lb lighter per corner than the heaviest (Toyo Open Country M/T, LT F).

17 tires in 35×12.50R18

Sort by the spec you care about.

	Load					Revs/mi	Source
General Grabber A/TXAll-terrain	LT E · 123R	35.00	61.3	16.0	3,415	594	Spec page
BFGoodrich All-Terrain T/A KO3All-terrain	LT F · 128R	34.50	63.0	16.0	3,970	602	Spec page
Mickey Thompson Baja Legend EXPAll-terrain	LT D · 118Q	34.50	65.0	18.5	2,910	–	Spec page
BFGoodrich All-Terrain T/A KO3All-terrain	LT D · 118R	34.50	65.7	15.0	2,910	602	Spec page
Toyo Open Country R/T TrailRugged-terrain	LT F · 128Q	34.53	66.1	16.9	3,970	602	Spec page
Toyo Open Country A/T IIIAll-terrain	LT D · 118R	34.53	66.1	16.9	2,910	602	Spec page
Mickey Thompson Baja Legend MTZMud-terrain	LT D · 118Q	34.80	70.0	21.0	2,910	–	Spec page
Toyo Open Country R/T ProRugged-terrain	LT F · 128Q	34.80	72.9	19.9	3,970	598	Spec page
General Grabber X3Mud-terrain	LT E · 123Q	35.00	73.0	21.0	3,415	594	Spec page
Mickey Thompson Baja Boss A/TAll-terrain	LT D · 118Q	34.60	73.0	18.5	2,910	–	Spec page
Mickey Thompson Baja Boss M/TMud-terrain	LT D · 118Q	34.80	73.0	21.0	2,910	–	Spec page
BFGoodrich HD-Terrain T/A KT	LT F · 128Q	34.50	73.1	18.0	3,970	602	Spec page
BFGoodrich Mud-Terrain T/A KM3Mud-terrain	LT E · 123Q	34.50	74.1	18.0	3,415	602	Spec page
Toyo Open Country A/T IIIAll-terrain	LT F · 128Q	34.53	74.7	16.9	3,970	602	Spec page
Toyo Open Country C/TCommercial	LT F · 128Q	34.76	76.5	19.3	3,970	598	Spec page
Toyo Open Country M/TMud-terrain	LT E · 123Q	35.04	81.0	21.0	3,415	593	Spec page
Toyo Open Country M/TMud-terrain	LT F · 128Q	34.76	81.4	21.0	3,970	598	Spec page

Is a 35×12.50R18 really 35 inches tall?

34.7″

Mostly. The name says 35″, and the 17 tires here publish 34.50–35.04″.

All 35-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

Size	Diameter ″	vs 35×12.50R18	Difference
285/70R18	33.71	-1.29″	-3.7%
295/70R18	34.26	-0.74″	-2.1%
295/75R17	34.42	-0.58″	-1.7%
325/65R18	34.63	-0.37″	-1.0%
305/70R18	34.81	-0.19″	-0.5%
285/75R18	34.83	-0.17″	-0.5%
35×10.50R17	35.00	0.00″	0.0%
35×11.50R17	35.00	0.00″	0.0%
35×12.50R17	35.00	0.00″	0.0%
315/70R18	35.36	+0.36″	+1.0%

How to read 35×12.50R18

How to read any tire size

How 35X12.50R18LT 128Q is printed on the sidewall. It's the most common code among the 17 tires here (6 of them); tires in this size come in other load and speed ratings too.

135Overall diameter

35 inches tall, measured on the approved wheel. Flotation sizes give every number in inches.

212.50Section width

12.50 inches across the widest point, or 318 mm.

3RConstruction

Radial construction.

418Wheel diameter

Mounts on a 18-inch wheel. Approved wheel widths run 8.5″ to 11.0″.

5LTLight truck

Marks a light truck (LT) tire.

6128Load index

Each tire carries up to 3,970 lb (1,800 kg) at its maximum pressure.

7QSpeed rating

Rated for up to 99 mph sustained.

FLoad range

Printed separately as "LOAD RANGE F": a 12-ply rating, inflated up to 95 psi (standard load-range table). The load range F tires here carry up to 3,970 lb each, as published.

Specification	Inches	Metric
Overall diameter	35.00	889 mm
Section width	12.50	318 mm
Sidewall height	8.50	215.9 mm
Circumference	110.0	2,793 mm
Revolutions per mile (calculated, unloaded)	576.2	358 per km
Revolutions per mile (published by manufacturers)	593–602	368–374 per km
Approved wheel width	8.5–11.0	216–279 mm

Speedometer error after switching to 35×12.50R18

Your actual speed– mph

Questions about 35×12.50R18

What is 35×12.50R18 in inches?

35.00 inches tall, 12.50 inches wide, on a 18-inch wheel. Manufacturers publish 34.50–35.04 inches for the 17 tires listed here.

How much does a 35×12.50R18 tire weigh?

Between 61.3 lb and 81.4 lb for the 17 tires listed here. The lightest is the General Grabber A/TX (LT E); the heaviest is the Toyo Open Country M/T (LT F).

What wheel width do I need for 35×12.50R18?

Manufacturers approve 8.5–11.0″ wide wheels for this size.

How many revolutions per mile does a 35×12.50R18 make?

Published figures run 593–602 revolutions per mile. The calculated figure is 576.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 35×12.50R18 than 285/75R18?

0.17 inches taller on paper (35.00″ vs 34.83″), which raises the axle about 0.08″. Your speedometer will read about 0.5% slow.