How tall is a 275/65R18 tire?

A 275/65R18 has a nominal overall diameter of 32.08 inches (815 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 275/65R18 tire fit?

A 275/65R18 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 275/65R18 mean?

275 is the section width in millimetres. 65 is the aspect ratio — the sidewall is 65% of the width, so 178.8 mm here. R marks the construction (radial). 18 is the wheel diameter in inches.

Size Dimensions & Specs

Tires Size 275/65R18

Dimensions, specs, and every size 275/65R18 tire currently in stock

Overall Height

32.08"

815 mm · calculated

Section Width

275 mm

10.83 inches

Sidewall Height

7.04"

178.8 mm · 65% profile

Wheel Diameter

18"

457.2 mm

275/65R18 Specifications

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

Specification	Imperial	Metric
Section width	10.83 in	275 mm
Aspect ratio	65%	—
Sidewall height	7.04 in	178.8 mm
Overall diameter (calculated)	32.08 in	815 mm
Wheel / rim diameter	18 in	457.2 mm
Construction	Radial	—

What does 275/65R18 mean?

Reading the code on your sidewall

Section width

275 mm

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

Aspect ratio

65% profile

The sidewall stands 65% of the section width, which is 178.8 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.

275/65R18 Questions & Answers

Dimensions and fitment guidelines for size 275/65R18

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

LT 7.00-14 AKURET TRAKER PLUS XL 8PLY

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

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

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

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

P235/50R19 LIONHART LH-FIVE 103V BLK XL 320-A-A 40K + ROAD HAZARD

205/40ZR17 ROYALBLACK RACINGTRAC 84W XL 420-A-A 50K + ROAD HAZARD

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

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

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

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

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

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

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

$245/45R19 VOGUE CUSTOM BUILT RADIAL VIII 102V XL 0.87\ GOLD/WHITE 460-A-A 60K"$

245/45R19 VOGUE CUSTOM BUILT RADIAL VIII 102V XL 0.87\ GOLD/WHITE 460-A-A 60K"

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

LT295/65R20 GLADIATOR X COMP M/T 129/126 10PLY

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

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