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

ST205/75R15 SYNERGY ST801 10PLY

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

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

P255/65R17 LEXANI LXHT-206 110H BSW 55K+ ROAD HAZARD

LT245/75R16 ARMSTRONG TRU-TRAC A/T 120/116S 10PLY 65K+ROAD HAZARD

255/45ZR18 ROYALBLACK RACINGTRAC 103W XL 420-A-A 50K + ROAD HAZARD

245/45ZR20 ATLANDER XSPORT-86 103W XL 420A-A 45K + ROAD HAZARD

275/40ZR18 LANDSPIDER CITY SPORT 103W XL BSW

285/45ZR22 LANVIGATOR EXCITE 114W XL 420 A-A 50K + ROAD HAZARD

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

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

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

305/35ZR20 ROADTRACK TERRENA UHP 107Y XL 420-A-A 50K + ROAD HAZARD

265/70R16 ZEETEX HT1000 112H 600-A-A 50K + ROAD HAZARD

145/70R13 ARMSTRONG BLU-TRAC PC 71T 700-A-A 85K+ ROAD HAZARD

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

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

P215/60R17 LEXANI QUATTRO TEMPO TOUR AW 96H BLK 600A-A 70K+ ROAD HAZARD

265/70R16 TRAVELSTAR ECOPATH A/T 112T 520-A-B 50K+ ROAD HAZARD

LT275/65R18 ROYALBLACK MILAGEMAX LTR H/T 123/120S 10PLY