Tire Size Guide

275/55R18 Tires

Compare 1 available models across 1 categories, then confirm fitment for your vehicle.

Our Top Pick in 275/55R18
Kumho Ecsta STX KL12
Ultra High Performance SummerValue

The Kumho Ecsta STX KL12 is a viable option for drivers prioritizing treadlife over peak performance metrics.

Treadlife score of 8.3 is above average for the category, suggesting a longer lifespan than many ultra-high-performance summer tires. Dry grip rating of 8 is competitive, though it trails top performers like the Michelin Pilot Sport 4S. Handling score of 8 aligns well with the category expectations, providing reliable performance for spirited driving.
70Spec score (est.)
Full analysis
1 model

Best Ultra High Performance Summer Tires in 275/55R18

All Ultra High Performance Summer tires

The Kumho Ecsta STX KL12 is a viable option for drivers prioritizing treadlife over peak performance metrics.

  • Treadlife score of 8.3 is above average for the category, suggesting a longer lifespan than many ultra-high-performance summer tires.
  • Dry grip rating of 8 is competitive, though it trails top performers like the Michelin Pilot Sport 4S.

The 'R' speed rating limits high-speed potential, which could be a concern for those seeking maximum performance capabilities.

Treadwear 420Traction A
Spec score70estimated
Details
Fitment

Vehicles Using 275/55R18

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Popular Brands in 275/55R18

Size decoded

What 275/55R18 Means

275/55R18 designates a tire 275 mm (10.8") wide with a sidewall 55% as tall as it is wide — about 151 mm (6.0") — mounted on a 18-inch wheel. That works out to an overall diameter of roughly 29.9", a circumference of about 94.0", and approximately 674 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

151 mm

Sidewall height

29.9"

Overall diameter

94.0"

Circumference

674

Revs per mile

Of the 1 275/55R18 tire models we track, the most common category is ultra high performance summer (1 model) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 275/55R18 mean?
275/55R18 breaks down as follows: 275mm is the tire's section width (the widest point), 55 is the aspect ratio (sidewall height as a percentage of width), R means radial construction, and 18 is the wheel diameter in inches.
What vehicles use 275/55R18 tires?
275/55R18 is a common fitment for vehicles like the 2002 Lincoln Blackwood, 2001 Lincoln Blackwood. Always confirm your specific trim's fitment before purchasing.
How tall is a 275/55R18 tire?
A 275/55R18 tire has a sidewall height of about 151 mm (6.0") and an overall diameter of roughly 29.9", turning approximately 674 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

275/55R18 Research Guides

Confirm 275/55R18 fits your vehicle

Wheel size can vary by trim and option package. Enter your year, make, model, and trim to verify fitment before you order.

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