Firehawk Indy 500

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 305/35R20 size

In the size code 305/35R20, 305 is the section width in millimetres (about 12"). 35 is the aspect ratio — the sidewall height is 35% of the width, or roughly 106.8 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 28.4".

The load index 104 means each tire supports up to 1,984 lbs — about 7,936 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.

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 $241.49 per tire, a full set of four costs $965.96. That is about 29% below the average price of the 31 tires we stock in this size.