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.

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

295/35ZR24 ROYALBLACK RACINGTRAC 110W 420-A-A 50K + ROAD HAZARD

275/55R20 TOYO PROXES ST III 117V XL BSW 500-A-A 40K

265/70R16 ATLANDER ROVERCLAW A/T OWL 112T 560-A-B 50K+ ROAD HAZARD

LT265/70R16 ROYALHUNTER ROYALTRAX A/T 121/118S 10PLY

P265/70R16 LEXANI LXHT-206 111T 500-A-A 55K+ ROAD HAZARD

LT265/70R16 ATLANDER ROVERCLAW A/T 121/118S 10PLY

LT285/70R17 LANVIGATOR VALIANT A/T 126/123R 10PLY 50K + ROAD HAZAR

275/45ZR20 ROYALBLACK RACINGTRAC 110W 420-A-A 50K + ROAD HAZARD

33X12.50R22 RBP REPULSOR M/T 3 BSW 114Q 12PLY 80psi

7.50-16 AKURET HARROW TRACK F2 F3 8PLY dot-2012

245/45ZR19 ZEETEX HP1000 102Y XL 400-A-A REINFORCED

315/35ZR20 PEGASUS HPX SPORT A/S 110W XL 420 AA A 50K + ROAD HAZARD

P215/55R17 LIONHART RAMANI A/S 98W XL BLK 500A-A 50K + ROAD HAZARD

LT235/70R17 RBP REPULSOR A/T PLATEAU 120/117R 10PLY BLK 50K + ROAD HAZARD

255/45ZR19 ROADTRACK TERRENA UHP 104W M+S 420-A-A 50K + ROAD HAZARD

225/55R17 ZENNA SPORT LINE 101V XL M+S 420-A-A 60K + ROAD HAZARD

LT275/65R20 PEGASUS RTX R/T 126/123R 10PLY 40K+ ROAD HAZARD

LT275/65R20 ROYALBLACK TERRA FORCE RTX R/T 128/125S 12PLY

235/35ZR20 ROADTRACK TERRENA UHP 92W M+S 420-A-A 50K + ROAD HAZARD

235/50R19 COSMO ROAD HUNTER 99V M+S 560A-A 60K + ROAD HAZARD