Tire Size Guide

315/30R18 Tires

Compare 7 available models across 1 categories, then confirm fitment for your vehicle.

Our Top Pick in 315/30R18
Falken Azenis RT615K+
Ultra High Performance SummerPerformance

The Falken Azenis RT615K+ is a prime choice for drivers who prioritize dry grip and handling above all else.

Perfect 10 dry grip and handling scores make it a standout for aggressive driving and track use. Comfort and noise scores are on par with the category averages, ensuring a tolerable ride for a performance tire. UTQG treadwear rating of 200 is typical for its class, balancing performance with moderate wear resistance.
68Spec score (est.)
Full analysis
7 models

Best Ultra High Performance Summer Tires in 315/30R18

All Ultra High Performance Summer tires

The Falken Azenis RT615K+ is a prime choice for drivers who prioritize dry grip and handling above all else.

  • Perfect 10 dry grip and handling scores make it a standout for aggressive driving and track use.
  • Comfort and noise scores are on par with the category averages, ensuring a tolerable ride for a performance tire.

Wet grip performance is below average for the category, making it less suitable for frequent wet conditions.

Treadwear 200Traction A
Spec score68estimated
Details

The Falken Azenis RT660 is a compelling option for drivers who prioritize dry grip and handling response.

  • Dry grip score of 9 surpasses the category average of 8.7, making it a strong choice for spirited driving.
  • Handling rating of 9 indicates precise and responsive steering, ideal for performance enthusiasts.

Wet grip performance is below average, making it less ideal for those frequently driving in rainy conditions.

Treadwear 200Traction A
Spec score68estimated
Details

The Yokohama ADVAN A052 is a tire for those who prioritize dry grip and handling precision above all else.

  • Perfect dry grip and handling scores of 10, setting a high bar in the ultra-high-performance summer category.
  • Comfort and noise scores align with category averages, making it livable for spirited driving without excessive harshness or noise.

Wet grip performance trails the category, making it less suitable for those who frequently drive in rainy conditions.

Treadwear 200Traction A
Spec score68estimated
Details

The Michelin Pilot Sport PS2 is a go-to option for enthusiasts seeking high dry and wet grip, with both scores at 9, exceeding the category averages of 8.7 and 7.6 respectively.

  • Dry grip score of 9 surpasses the category average of 8.7, making it a strong choice for spirited driving.
  • Wet grip also rated at 9, well above the category average of 7.6, which is reassuring for summer rainstorms.

The 20,000-mile treadwear warranty is less than the category average, which could be a concern for those looking for longer-lasting performance tires.

20,000 mi warrantyTreadwear 220Traction AA
Spec score65estimated
Details
Show 3 more ultra high performance summer options
Toyo Tire Proxes R888R

Specs on detail page

Toyo Tire Proxes R

Specs on detail page

Nitto NT01

Specs on detail page

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Popular Brands in 315/30R18

Size decoded

What 315/30R18 Means

315/30R18 designates a tire 315 mm (12.4") wide with a sidewall 30% as tall as it is wide — about 95 mm (3.7") — mounted on a 18-inch wheel. That works out to an overall diameter of roughly 25.4", a circumference of about 79.9", and approximately 793 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

95 mm

Sidewall height

25.4"

Overall diameter

79.9"

Circumference

793

Revs per mile

Of the 7 315/30R18 tire models we track, the most common category is ultra high performance summer (7 models) — a good indicator of the kind of vehicles and driving this size is designed for.

Before you buy

Frequently Asked Questions

What does 315/30R18 mean?
315/30R18 breaks down as follows: 315mm is the tire's section width (the widest point), 30 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 315/30R18 tires?
315/30R18 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 315/30R18 tire?
A 315/30R18 tire has a sidewall height of about 95 mm (3.7") and an overall diameter of roughly 25.4", turning approximately 793 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

315/30R18 Research Guides

Confirm 315/30R18 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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