Tyres - Frequently Asked Questions

Why do I need to replace my tyres?

You need to change your tyres so you and your passengers can travel as safely on the road as possible.

This law is to protect you and your passengers, as tyres below this limit, do not perform as well as a new tyre, particularly in wet conditions. The minimum legal tread depth is 1.6mm throughout a continuous band comprising the central three-quarters of the breadth of tread and around the entire outer circumference of the tyre.

Any tyre with visible damage or abnormality sidewall or tread deformation, bulges, deep cuts, splits, vibration, vehicle pulling to one side etc, must be thoroughly investigated, to establish whether it can be repaired or should be removed and scrapped.

If you are in any doubt about your tyres, call in for a free Tyre Health Check.

Why does my vehicle pull to one side?

The pressure in your tyres could be the issue with your vehicle pulling to the left or the right. Your car may also need realigned according to the manufacturers guidelines.

If you would like Charles Hurst Tyres to help, please fill out the form below and someone will contact you shortly.

Why do my tyres wear unevenly?

Incorrect tyre pressure, mechanical part failure and incorrect wheel alignment, are the main factors that cause a tyre to wear unevenly.

Correct tyre pressure will help to extend the life of your tyre, improve vehicle safety and give you better fuel efficiency. The manufacturer of your vehicle specifies the suitable pressure, and it should be checked at least every couple of weeks.

We will check your pressures free of charge for you.

Incorrect wheel alignment will result in rapid irregular tyre wear and can even affect the handling and safety of the vehicle. Wheel alignment is affected by impacts on your wheels, eg . pot holes, kerbs or speed slowing humps.

We offer a free wheel alignment check, and you only pay if adjustment is required.

Why does my Steering Wheel Vibrate?

Your steering wheel vibrating could mean that your tyres are out of balance and they need re-balanced. Another reason could be that your tyres aren't properly inflated according to the manufacturer guidelines.

If you have any queries about your tyres and you would like us to check your tyres for you please fill out the contact form and one of our tyre specialists will be in touch with you shortly.

What do Tyre Sidewall markings mean?

Tyre Markings Explained

Charles Hurst Tyres endeavour to make tyre purchases as simple a process as possible for customers. Our tyre experts will advise on the most suitable tyres for your vehicle based on a number of factors, however we can also educate customers on how to understand tyre markings and the range of different tyres available. At Charles Hurst Tyres we use a number of top-brands sourced directly from manufacturers. In recent years unapproved Tyre merchants have been selling illegal, imitation tyres that perform poorly in road safety tests and can be very dangerous to use.

How do you find your Tyre Size?

The size and type of tyre can be located on the tyre sidewall as shown below, along with the manufacturer name. These numbers can be confusing, however these are explained below, this information tells you about the tyre dimensions, speed rating and tyre pressure setting.

Tyre Width

Tyre Width is exactly as it sounds, the measurement in millimetres of width of the tyre. Wider Tyres have more contact with the road, and thus have more grip and traction. 205/55 R16 91W

Tyre Profile

Also know as the Tyre Aspect Ratio, the profile of a tyre is actually a ratio, not a size measurement. The profile is the ratio of tyre width to tyre sidewall height shown as a percentage.

For example: If the tyre has the dimensions as shown - 205/55; Then the profile is 55% of the width, so 55% of 205mm is 112.75mm. The tyre height from the rim to the tread is 112.75mm
205/55 R16 91W

Wheel Size

This is the diameter of the wheel/rim, measured in inches. 205/55 R16 91W

Tyre Load Ratings

Tyre load ratings relate to the maximum load carrying capacity of each individual tyre. In this case the "91" is code for 615 kilograms. 205/55 R16 91W.

The Load Index is represented in the table below:

Tyre Speed Rating

The Tyre Speed Rating on each tyre is given as a letter which represents different categories. Each category represents the top speed a tyre can sustain for 10minutes without breaking up into pieces. Each category is in 10mph intervals. 205/55 R16 91W

Load IndexKilogramsLoad IndexKilogramsLoad IndexKilograms
65 290 80 450 95 690
66 300 81 462 96 710
67 307 82 475 97 730
68 215 83 487 98 750
69 325 84 500 99 775
70 335 85 515 100 800
71 345 86 530 101 825
72 355 87 545 102 850
73 365 88 560 103 875
74 375 89 580 104 900
75 387 90 600 105 925
76 400 91 615 106 950
77 412 92 630 107 975
78 425 93 650 108 1000
79 437 94 670

Speed SymbolApprox MPH
Q 99
R 106
S 112
T 118
U 131
VR 149
W 131
X 168
Y 186
ZR 149

For more information on which tyres are best suited to your car please contact us now. Our team of experts are ready to advise you on the best tyre suited to your vehicle and driving needs.