How tall is a 235/50R18 tire?

A 235/50R18 has a nominal overall diameter of 27.26 inches (692 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 235/50R18 tire fit?

A 235/50R18 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 235/50R18 mean?

235 is the section width in millimetres. 50 is the aspect ratio — the sidewall is 50% of the width, so 117.5 mm here. R marks the construction (radial). 18 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 235/50R18

Dimensions, specs, and every size 235/50R18 tire currently in stock

Overall Height

27.26"

692 mm · calculated

Section Width

235 mm

9.25 inches

Sidewall Height

4.63"

117.5 mm · 50% profile

Wheel Diameter

18"

457.2 mm

235/50R18 Specifications

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

Specification	Imperial	Metric
Section width	9.25 in	235 mm
Aspect ratio	50%	—
Sidewall height	4.63 in	117.5 mm
Overall diameter (calculated)	27.26 in	692 mm
Wheel / rim diameter	18 in	457.2 mm
Construction	Radial	—

What does 235/50R18 mean?

Reading the code on your sidewall

Section width

235 mm

The distance from sidewall to sidewall across the tire's widest point.

Aspect ratio

50% profile

The sidewall stands 50% of the section width, which is 117.5 mm on this 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.

235/50R18 Questions & Answers

Dimensions and fitment guidelines for size 235/50R18

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

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

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

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

205/50ZR17 FULLRUN F6000 93W XL M+S 380A-A

P235/70R16 LEXANI LXHT-206 107T 500-A-A 55K+ ROAD HAZARD

LT265/70R16 LIONHART LIONCLAW ATX2 BLK 10PLY 40K+ ROAD HAZARD

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

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

35X13.50R24LT ROADTRACK TERRENA M/T 116Q 12PLY

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

Mohawk Comanche R/T 275/55R20

305/25R32 LEXANI LX-THIRTY 108W XL 320-A-A 30K + ROAD HAZARD dot-1120

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

225/35R19 ARMSTRONG BLU-TRAC HP 88W XL M+S 340A-A 45K+ ROAD HAZARD

LT295/55R20 FORTUNE TORMENTA R/T 123/120Q 10PLY M+S 50K 80psi ***BUFFED

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

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

265/70R16 ZETA CONSENSO H/T 112H 500A-A M+S 40K+ ROAD HAZARD

P255/55R18 LEXANI QUATTRO TEMPO TOUR AW 109V BLK 600A-A 70K+ ROAD HAZARD