Tire Scouter

235/80R18 tires

Compare 2 models made in this size across 2 categories, ranked by spec score, then confirm fitment for your vehicle.

Spec scores are estimates from five manufacturer specs, not road tests. How we score

Shop 235/80R18 tires at Tire Rack

See tires in this size, then confirm the load index and speed rating your vehicle needs.

We may earn a commission from retailer links. Learn more

Shop 235/80R18 at Tire Rack
Our top pick in 235/80R18

Michelin Primacy XC

  • Highway all-season truck

Best for moderate mileage truck owners.

The Michelin Primacy XC is a solid choice for truck owners who need reliable wet grip and balanced handling.

  • Treadlife warranty of 55,000 miles is competitive, though slightly below the category average of 61,048 miles.
  • Wet grip score of 7 is above the category average of 6.1, offering better-than-average performance in rainy conditions.
  • Handling score of 7.5 matches the dry grip score, indicating balanced performance on paved roads.
Full analysis

The highest spec score among highway all-season truck tires in this size that we have analysis for, the most common category for 235/80R18.

65Good
40k mi
480
A
R · 106 mph

Every scale below runs from the lowest to the highest spec score among the 2 scored tires in 235/80R18 (58 to 65).

Best highway all-season truck tires in 235/80R18

1 model, highest spec score first.

All highway all-season truck tires

  1. Michelin Primacy XC

    Best for moderate mileage truck owners.

    65GoodFrom 4 of 5 specs
    Warranty
    40k mi
    Treadwear
    480
    Traction
    A
    Speed rating
    R · 106 mph
    • Treadlife warranty of 55,000 miles is competitive, though slightly below the category average of 61,048 miles.
    • Wet grip score of 7 is above the category average of 6.1, offering better-than-average performance in rainy conditions.
    • The about average treadwear rating of 480 compared to the category average might lead to more frequent replacements.

Best all-terrain tires in 235/80R18

1 model, highest spec score first.

All all-terrain tires

  1. BFGoodrich All Terrain T/A KO3

    Severe-snow rated

    Best for off-road adventurers.

    58FairFrom 2 of 5 specs
    Warranty
    50k mi
    Treadwear
    Not graded
    Traction
    Not graded
    Speed rating
    S · 112 mph
    • Off-road traction is bolstered by the 3PMSF rating, making it suitable for challenging terrains and mild winter conditions.
    • Treadlife score of 7.5 is supported by a 50,000-mile warranty, which is competitive within the all-terrain category.
    • If you prioritize quiet highway rides, the average noise level may be a dealbreaker compared to quieter options.

Vehicles that use 235/80R18

A sample of recent vehicles whose factory front size is 235/80R18. Sizes can vary by trim, so confirm yours before you buy.

  • 2025 Chevrolet Silverado 3500
  • 2025 GMC Sierra 3500 HD
  • 2024 Chevrolet Silverado 3500
  • 2024 GMC Sierra 3500 HD

Popular brands in 235/80R18

The number beside each brand is how many of its models come in this size.

What 235/80R18 means

235/80R18 designates a tire 235 mm (9.3") wide with a sidewall 80% as tall as it is wide — about 188 mm (7.4") — mounted on a 18-inch wheel. That works out to an overall diameter of roughly 32.8", a circumference of about 103.1", and approximately 615 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

Of the 2 235/80R18 tire models we track, the most common category is highway all-season truck (1 model), followed by all-terrain (1) — a good indicator of the kind of vehicles and driving this size is designed for.

Sidewall height
188 mm
Overall diameter
32.8 in
Circumference
103.1 in
Revs per mile
615

Frequently asked questions

What does 235/80R18 mean?

235/80R18 breaks down as follows: 235mm is the tire's section width (the widest point), 80 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 235/80R18 tires?

235/80R18 is a common fitment for vehicles like the 2025 Chevrolet Silverado 3500, 2025 GMC Sierra 3500 HD, 2024 Chevrolet Silverado 3500, 2024 GMC Sierra 3500 HD. Always confirm your specific trim's fitment before purchasing.

How tall is a 235/80R18 tire?

A 235/80R18 tire has a sidewall height of about 188 mm (7.4") and an overall diameter of roughly 32.8", turning approximately 615 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

235/80R18 research guides

Best tires for trucks

Truck-focused picks and tradeoffs for highway, all-terrain, towing, and work-truck use.

Read the guide

LT vs P-metric tires

Load ranges, ply ratings and XL tires explained, and what changes when you switch to LT tires.

Read the guide

Tire warranty explained

Mileage warranties, exclusions, road hazard fine print, and how to compare warranty language intelligently.

Read the guide

Confirm 235/80R18 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.

Check my vehicle