Tire Size Guide

285/40R18 Tires

Compare 2 available models across 1 categories, then confirm fitment for your vehicle.

Our Top Pick in 285/40R18
Nitto NT555 G2
Ultra High Performance SummerPerformance

The Nitto NT555 G2 is a strong choice for drivers who prioritize dry and wet grip, with perfect scores in both dry grip and handling, and a wet grip rating of 9 that exceeds the category average.

Perfect dry grip score of 10, significantly above the category average of 8.7, ideal for spirited driving. Wet grip rating of 9 outpaces the ultra-high-performance summer average of 7.6, enhancing safety in wet conditions. Handling score of 10 ensures precise and responsive driving dynamics, a standout feature in this category.
80Spec score (est.)
Full analysis
2 models

Best Ultra High Performance Summer Tires in 285/40R18

All Ultra High Performance Summer tires
Nitto NT555 G2Performance

The Nitto NT555 G2 is a strong choice for drivers who prioritize dry and wet grip, with perfect scores in both dry grip and handling, and a wet grip rating of 9 that exceeds the category average.

  • Perfect dry grip score of 10, significantly above the category average of 8.7, ideal for spirited driving.
  • Wet grip rating of 9 outpaces the ultra-high-performance summer average of 7.6, enhancing safety in wet conditions.

Lack of a treadwear warranty could deter buyers looking for a guaranteed lifespan, especially when competitors offer one.

Treadwear 320Traction AA
Spec score80estimated
Details

The Michelin Pilot Sport 4S is a standout choice for drivers who prioritize dry and wet grip above all else.

  • Dry grip score of 10 leads the ultra high performance summer category, ideal for spirited driving.
  • Wet grip score of 9 significantly exceeds the category average of 7.6, enhancing safety in wet conditions.

The 30,000-mile treadwear warranty may fall short for drivers who cover extensive distances annually.

30,000 mi warrantyTreadwear 300Traction AA
Spec score69estimated
Details
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Popular Brands in 285/40R18

Size decoded

What 285/40R18 Means

285/40R18 designates a tire 285 mm (11.2") wide with a sidewall 40% as tall as it is wide — about 114 mm (4.5") — mounted on a 18-inch wheel. That works out to an overall diameter of roughly 27.0", a circumference of about 84.7", and approximately 748 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

114 mm

Sidewall height

27.0"

Overall diameter

84.7"

Circumference

748

Revs per mile

Of the 2 285/40R18 tire models we track, the most common category is ultra high performance summer (2 models) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 285/40R18 mean?
285/40R18 breaks down as follows: 285mm is the tire's section width (the widest point), 40 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 285/40R18 tires?
285/40R18 is a standard tire size found on many trucks, SUVs, and crossovers. Use our vehicle search to confirm your exact fitment.
How tall is a 285/40R18 tire?
A 285/40R18 tire has a sidewall height of about 114 mm (4.5") and an overall diameter of roughly 27.0", turning approximately 748 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

285/40R18 Research Guides

Confirm 285/40R18 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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