How tall is a 33x12.50R18LT tire?

A 33x12.50R18LT has a nominal overall diameter of 33 inches (838 mm), calculated as the 18-inch wheel plus two sidewalls. This is the unloaded figure — a fitted tire sits fractionally shorter under the weight of the vehicle.

What wheel size does a 33x12.50R18LT tire fit?

A 33x12.50R18LT fits a wheel of 18 inches in diameter. The wheel also has to be within the rim width range the manufacturer publishes for this size, which is printed in the tire's spec sheet.

What do the numbers in 33x12.50R18LT mean?

This is a flotation size, quoted in inches rather than millimetres. 33 is the overall diameter, 12.5 is the section width, R marks the construction (radial), and 18 is the wheel diameter.

Free shipping on every order

Brand-new, factory-fresh tires

Ships to your door or installer

Over 10,000 tires in stock

Free shipping on every order

Brand-new, factory-fresh tires

Ships to your door or installer

Over 10,000 tires in stock

Size Dimensions & Specs

Tires Size 33x12.50R18LT

Dimensions, specs, and every size 33x12.50R18LT tire currently in stock

Overall Height

33"

838 mm · calculated

Section Width

12.5"

stated in inches

Sidewall Height

7.5"

191 mm

Wheel Diameter

18"

457.2 mm

33x12.50R18LT Specifications

Read directly from the size code. Load index, speed rating, and rim width range vary by model.

Specification	Imperial	Metric
Section width	12.5 in	—
Sidewall height	7.5 in	191 mm
Overall diameter (calculated)	33 in	838 mm
Wheel / rim diameter	18 in	457.2 mm
Construction	Radial	—

What does 33x12.50R18LT mean?

Reading the code on your sidewall

Overall diameter

33 in

Flotation sizes lead with the tire's full height in inches rather than a width in millimetres.

Section width

12.5 in

The width across the widest point of the tire, also quoted in inches on this style of size.

Construction (R)

Radial

The body plies run across the tire at right angles to the direction of travel.

Wheel diameter

18 in

Fits a wheel measuring 18 inches across.

33x12.50R18LT Questions & Answers

Dimensions and fitment guidelines for size 33x12.50R18LT

Customer Support & Fitment Advice

Need Help Choosing The Right Tires?

Have questions about fitment, brands, or pricing? Our team of tire experts is here to guide you to the perfect set — zero pressure, zero sales tactics.

100% Guaranteed Fitment Advice

Talk to a Tire Specialist Today

We make tire buying fast and effortless. Call or email us anytime to verify size compatibility, load index, or speed ratings for your vehicle.

Call Direct

(916) 520-1702

Send Email

info@natireshub.com

Mon - Fri: 8:00 AM - 5:00 PM PST

✓

Fast Expert Advice

Response within 1 business hour

Live Inventory

Shop Our Collection

Explore premium tires, wheels, and fitments from top brands

245/45ZR19 ATLANDER XSPORT-86 102W XL 420A-A 50K + ROAD HAZARD

205/45ZR16 ROADTRACK TERRENA UHP 98W M+S 420-A-A 50K + ROAD HAZARD

LT265/70R17 ATLANDER ROVERCLAW M/T I 121/118Q 10PLY

225/55ZR18 MOHAWK AEGIS SPORT A/S 102W XL M+S 500-A-A 50K + ROAD HAZARD

245/45ZR18 FORTUNE VIENTO FSR702 A/S 100Y XL M+S 500A-A 50K

Leao Reg Drive AAR22S 3PMSF 225/70R19.5

235/50ZR18 ROADTRACK TERRENA UHP 110W XL 420-A-A 50K + ROAD HAZARD

275/65R18 ROYALBLACK MILAGEMAX SUV CUV 116H 620-A-A 60K + ROAD HAZARD

235/45R17 TOYO EXTENSA HP II 97W XL 500-A-A 45K

275/35ZR20 COSMO MUCHOMACHO 102Y XL 300-A-A 30K + ROAD HAZARD

185/70R14 ROYALBLACK TOURING HP 88T 560-A-A 60K + ROAD HAZARD

215/55R16 ROADTRACK TERRENA UHP 97V M+S 420-A-A 50K + ROAD HAZARD

235/40ZR19 ZENNA ARGUS UHP 98Y XL M+S 420-AA-A 50K+ ROAD HAZARD

275/40ZR20 TRAVELSTAR ECOSPORT GT 106W XL 460A-A 50K+ ROAD HAZARD

235/55R19 ARMSTRONG TRU-TRAC SU 105V XL M+S 440-A-A 65K+ ROAD HAZARD

LT265/75R16 TRAVELSTAR ECOPATH A/T 10PLY 50K+ ROAD HAZARD

265/70R17 TRAVELSTAR ECOPATH A/T 115T 520-A-B 50K + ROAD HAZARD

205/55R16 TRAVELSTAR ECO-MILE 4S 91V ALL-WEATHER 520A-A 60K+ ROAD HAZARD

285/35ZR19 ROADTRACK TERRENA UHP 103Y M+S 420-A-A 50K + ROAD HAZARD

235/55ZR19 ROADTRACK TERRENA UHP 105W M+S 420-A-A 50K + ROAD HAZARD