Firestone

Firehawk Indy 500

Name: Firestone Firehawk Indy 500 225/40R18 XL
Brand: Firestone
SKU: 012360
Price: 134.24 USD
Availability: InStock

225/40R18 XL

$134.24/tire $178.99

Set of 4: $536.96

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↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.

Specifications

Size	225/40R18 XL Firehawk INDY 500
Width	225 mm
Aspect ratio	40
Rim diameter	R18
Load index	92
Speed rating	W
Load range	XL

UTQG	340 A A
Tread depth	10/32"
Weight	23.1 lbs
Max pressure	50 psi
Severe snow (3PMSF)	No
Run-flat	No

About the Firestone Firehawk Indy 500

Summer Ultra-High Performance Passenger Car tire.

Features

* Proprietary pulse groove technology* Improved wet rubber compound and tread design* New tread compound and wide shoulder blocks* Gold Pledge Limited Warranty* 90-Day Buy and Try Guarantee

Benefits

* Improves water evacuation and increases resistance to hydroplaning* Provides 20% shorter stopping distance on wet roads* Improve cornering and handling in dry conditions

Understanding the 225/40R18 XL size

In the size code 225/40R18, 225 is the section width in millimetres (about 8.9"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 90 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25.1".

The load index 92 means each tire supports up to 1,389 lbs — about 5,556 lbs across a full set of four. The speed symbol W certifies the tire to 168 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Firestone Firehawk Indy 500 is built for

Fitment category: Undefined.

Tread life and grip ratings

This tire carries a UTQG rating of 340 A A. The treadwear grade of 340 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade A measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $134.24 per tire, a full set of four costs $536.96. That is about 11% below the average price of the 144 tires we stock in this size.

Frequently asked questions

What does the tire size 225/40R18 mean?

225 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 90 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 25.1 inches.

What are the load and speed ratings of the Firestone Firehawk Indy 500 225/40R18 XL?

Its load index of 92 allows up to 1,389 lbs per tire. Its speed rating of W is certified to 168 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Firestone Firehawk Indy 500 225/40R18 XL tires cost?

A single tire is $134.24 and a set of four is $536.96.

Does the Firehawk Indy 500 come in other sizes?

Yes — we stock 66 additional Firehawk Indy 500 sizes besides 225/40R18 XL. Fit only a size approved for your vehicle.