*Listed shipping rates are calculated on this item alone, which may not apply if you have additional items in your cart. You may change your shipping preferences at any time by proceeding to your shopping cart.
Using the latest technological advancements to achieve increased removal mileage and EPA SmartWay® verified and CARB-compliant fuel efficiency, the Firestone FS591 helps deliver the performance demanded by fleets. This on highway all-position radial tire, designed for the steer position, features an innovative sidewall design that reduces overall weight without sacrificing durability.
Ulti-Rib™ design combats the initiation and spread of irregular wear.
Continuous shoulder offers long, even wear and reduced rolling resistance.
Flow-through design allows for water evacuation to enhance road grip.
Stress release sipes fight irregular wear on main ribs by absorbing rib edge stresses in the footprint.
Thirsty cross-rib sipes improve traction by slicing through water for a solid grip on wet roads.
* Listed shipping rates are calculated on this item alone, which may not apply if you have additional items in your cart. You may change your shipping preferences at any time by proceeding to your shopping cart.
Please select your nearest location.
Searching local and regional inventory...
UTQG (Uniform Tire Quality Grade):A government-mandated tire rating system based on a tire's performance in treadwear durability, traction, and temperature resistance. UTQG ratings are branded on the tire's sidewall. Generally under controlled conditions, the higher the treadwear number (normally between 60-780), the less the tire will wear over time. Traction is based on lettering AA, A, B, C. Having an “AA” means the manufacturer rated tire high for traction. Temperature (A-C) represents how well a tire disperses heat at maximum speeds. An “A” rating means it dissipates heat at a higher speed.
Service Description: A service description is a number and a letter that together describes the tire’s load index and speed rating. This is generally molded into the sidewall of the tire. For instance, using 225/60R/18 99H as an example, the 99H denotes the tire’s service description. (See Load index, and Speed Rating).
Load Range: The maximum weight that the tire is designed to carry; dictated by the tire's construction. Metric passenger type tires are offered with a Standard Load (SL) Rating (up to 35 psi), or Extra Load (XL) Rating (up to 41 psi). LT Metric (truck type) tires are offered with ply ratings of C (6 ply), D (8 ply), and E (10 ply) and at various inflation pressures up to 80 psi.
Tread Depth: Measured in 32nds of an inch, Tread depth measures the top of the tire tread rubber to the bottom of its grooves. Tires should be replaced if worn down to 2/32nds or below.
Speed Rating: A code (A-Z) indicating the maximum speed a tire can carry in relation to a specified load capacity.
Symbol
km/h
mph
Symbol
km/h
mph
B
50
31
P
150
93
C
60
37
Q
160
99
D
65
40
R
170
106
E
70
43
S
180
112
F
80
50
T
190
118
G
90
56
U
200
124
J
100
62
H
210
130
K
110
68
V
240
149
L
120
75
W*
270
168
M
130
81
Y*
300
186
N
140
87
(Y)*
Above 300
Above 186
*For tires having a maximum speed cpability above 149 mph, a ZR may appear in the size designation. Above 186 mph a ZR must appear in the size designation, including a Y speed symbol in brackets.
Load Index: An assigned numerical code that corresponds to the load carrying capability of a tire. The higher the Load Index number, the greater a tire’s load it can carry.
