Popular Questions

Are your tires patched or repaired?
Some of our tires are professionally repaired. All repairs are covered with lifetime warranty.

How many 32nds new tire has?
NOTE: Amount of remaining tread life is indicated as % (percentage) at the end of each product title.
When new passenger and SUV tires have little over 10/32nds. High performance low profile tires come with 9/32nds. Swamper and Off-Road Tires may have up to 13/32nds.

How much tread depth difference is allowed?
4/32 is the rule of thumb. Some shops go with 3/32. You may combine tires with up to 4/32nds tread depth difference.

Can I combine different speed ratings?
No. If you take your car to the limit (for e.g.: track day). Since each tire can withstand certain speed, load and temperature levels.
Yes. If you're not reaching this limit. The speed rating of a tire is based on U.S. Government standards for reaching and sustaining a specified speed. And 99% of all manufactured tires are good to drive at 65-100 mph.

Understanding Tire Sidewall Markings

Tire Size Calculator

Speed Rating Table

It's the indication of the maximum speed.

Speed Rating Maximum Speed (mph)
L 74
M 81
N 87
P 93
Q 100
R 106
S 112
T 118
U 124
H 130
V 149
Z 93 to 149+
W 104 to 167+
Y 115 to 186+

Load Index Table

It's the indication of the maximum load allowed for the tire.

65 290 81 462 97 730 113 1150 129 1850
66 300 82 475 98 750 114 1180 130 1900
67 307 83 487 99 775 115 1215 131 1950
68 315 84 500 100 800 116 1250 132 2000
69 325 85 515 101 825 117 1285 133 2060
70 335 86 530 102 850 118 1320 134 2120
71 345 87 545 103 875 119 1360 135 2180
72 355 88 560 104 900 120 1400    
73 365 89 580 105 925 121 1450    
74 375 90 600 106 950 122 1500    
75 387 91 615 107 975 123 1550    
76 400 92 630 108 1000 124 1600    
77 412 93 650 109 1030 125 1650    
78 425 94 670 110 1060 126 1700    
79 437 95 690 111 1090 127 1750    
80 450 96 710 112 1120 128 1800    

If a listed speed rating contains two letters (such as ZR), the first letter represents the speed rating and the second letter (R) indicates that it is a radial tire.

Tread Life Conversion Table

Comparison chart to read tread life percentage in common measurements.

mm to Inch
Conversion Chart
mm Inches (approximate)
To the nearest
1/32 inch
Percentage Watermark
2mm 1/16 3/32
3mm 1/8 4/32 40% 4
4mm 3/16 5/32 55% 5
5mm 3/16 6/32
6mm 1/4 8/32 75% 7
7mm 1/4 9/32 95% 9
8mm 5/16 10/32
9mm 3/8 11/32

Used Tire Tread Measurement

Using depth gauge:
With a depth gauge you can get a more accurate measurement of the tread. Procedure is standard: line up the gauge over the tread and push the center into the groove between the tread.

The tread depth should be above the legal minimum of 1/32nds across three quarters of the tire.

Quick Check:
A quick visual check of the tire depth can be made by looking at the tread wear indicators. Tire worn down to the level of the indicator may have 2 to 4/32nds of remaining life, depends on manufacture.

We use the following images to help you quickly identify tread condition of used tires.

(4/32nds) 40% remaining tread life

(5-6/32nds) 55% remaining tread life

(7-8/32nds) 75% remaining tread life

(9-10/32nds) 95% remaining tread life

Used Tire Maintenance

Tire pressures, including the spare, should be checked at least once per month before driving, when the tires are cold (after the vehicle has been stopped for three hours or driven less than one mile). Do not reduce air pressure when tires are hot. Use professional tire gauge to check pressure and maintain it at the level recommended by the vehicle manufacturer. If a tire loses more than one pound of air pressure per month, have it checked for leakage by your dealer or professional tire shop. Proper inflation pressure is very important to tire durability tire life, comfortableness, and vehicle handling, therefore you should always maintain the correct inflation pressure in your used tires according to your vehicle manufacturer's recommendation. In addition, your vehicle has a Tire Information Placard, which indicates the proper tire size and inflation pressure for your particular model car.

Tire Structure

Important Driving Safety Tips

Used Tire Air Pressure
Measure tire pressure when the tire is cold, if needed inflate to the pressure specified by your car manufacture manual. You may also find pressure information on the side of the door of your vehicle.

Used Tire Wear
Minimum tread wear is limited to 1.5mm.
New tires come with approximately 10/32nds of tread. Check the chart above to compare tread life with common measurement.

Check the tread surface for cracks, pins, metal scraps, glass or anything that may cause a puncture. Also, check for pebbles stuck between the treads. If any of the above situations occur, please visit professional tire shop for repair.
Mounting used tire to the rim should be following the instruction of direction.
Used tires should be rotated according to specifications.
If the tire crown is abnormally worn (damage), please visit professional tire shop for replacement.
Avoid direct sunlight, rain, oil, and electric sparks in tire storage locations.

Check point
The tire is made of rubber and will deteriorate after a long period of use, and should be periodically inspected. Tire over 10 years old must be replaced.

Avoid grinding the sidewall against the curb and running over bumpy surfaces, to limit damage to the used tires.
Avoid sharp cornering, quick stops, and rapid acceleration, to prevent accidents from happening.
Keep a safe driving distance and obey the speed limit.
When you feel vibration from the vehicle or steering wheel, inspect used tires and your wheel balance. It is recommended to balance new or used tires every 10,000 miles.

Drive Safe!