What Is Load Rating?
When replacing your tyres, most drivers focus on tyre size. However, one of the most important markings on your tyre is the load rating.
At Uni Tyres Mobile Tyres Services, based in Dawley Parade, Hayes, we often meet motorists who are unaware that using the wrong load rating can affect safety, insurance validity, and MOT compliance. As a fully mobile tyre fitting service (no physical garage), we supply and fit the correct tyres at your home, workplace, or roadside.
Whether you're driving through Uxbridge, commuting to Ealing, or heading towards Slough, understanding tyre load rating ensures you stay safe and legal on the road.
What Is Tyre Load Rating?
The tyre load rating (also called the load index) is a number displayed on the tyre sidewall. It indicates the maximum weight a tyre can safely carry when properly inflated.
Example:
205/55 R16 91V
- 205/55 R16 – Tyre size
- 91 – Load index (load rating)
- V – Speed rating
The number “91” corresponds to a specific maximum weight capacity per tyre.
Why Load Rating Is Important
Using tyres with an incorrect load rating can cause:
- Vehicle instability
- Increased tyre wear
- Higher risk of blowouts
- Suspension strain
- Insurance complications
- MOT failure
If you regularly carry passengers or heavy loads, having the correct load rating is essential for safety.
Vehicle Load Index Chart
| Load Index | Maximum Load (kg per tyre) |
|---|---|
| 84 | 500 kg |
| 85 | 515 kg |
| 86 | 530 kg |
| 87 | 545 kg |
| 88 | 560 kg |
| 89 | 580 kg |
| 90 | 600 kg |
| 91 | 615 kg |
| 92 | 630 kg |
| 93 | 650 kg |
| 94 | 670 kg |
| 95 | 690 kg |
| 96 | 710 kg |
| 97 | 730 kg |
| 98 | 750 kg |
| 99 | 775 kg |
| 100 | 800 kg |
| 101 | 825 kg |
| 102 | 850 kg |
| 103 | 875 kg |
To calculate total supported vehicle weight, multiply the load index capacity by four tyres.
Example:
- Load Index 91 = 615 kg per tyre
- 615 kg × 4 tyres = 2460 kg total capacity
Always follow your vehicle manufacturer’s recommended load rating.
Where to Find Your Recommended Load Rating
You can find this information:
- In your vehicle handbook
- Inside the driver’s door frame
- On the fuel cap sticker
- On your existing tyres
Your replacement tyres must meet or exceed the manufacturer’s specification.
Can You Use a Higher Load Rating?
Yes. You may use tyres with a higher load rating than recommended.
No. You must never use tyres with a lower load rating than specified by the manufacturer. Doing so is unsafe and may invalidate your insurance.
Load Rating for Vans and SUVs
Vans and SUVs typically require:
- XL (Extra Load) tyres
- Reinforced tyres
- Higher load index numbers
These vehicles often carry heavier loads and require stronger tyre construction.
Signs Your Tyres May Be Overloaded
Common warning signs include:
- Excessive sidewall bulging
- Rapid shoulder wear
- Increased heat build-up
- Reduced fuel efficiency
- Poor handling
Overloaded tyres increase the risk of sudden motorway failure.
Professional Advice Matters
When choosing new tyres, always consider:
- Tyre size
- Load index
- Speed rating
- Tyre type
At Uni Tyres Mobile Tyres Services, we ensure every tyre fitted meets manufacturer requirements. As a mobile service, we make tyre replacement convenient and stress-free.
Our Mobile Tyre Services
- Mobile tyre fitting
- 24/7 emergency call-out
- Puncture repair
- TPMS sensor valve replacement
- Wheel balancing
- Emergency battery jump start
- Locking wheel nut removal
We cover Hayes and surrounding areas including Uxbridge, Ickenham, Northwood, Greenford, Perivale, Acton, West Drayton, Yiewsley, Feltham, Brentford, Chiswick, Teddington, Sunbury-on-Thames, Staines-upon-Thames, Ashford, Maidenhead, Langley, Datchet, Gerrards Cross, Denham, Beaconsfield, Iver, Edgware, Stanmore, and Pinner.
Need Help Choosing the Right Tyres?
Location: Dawley Parade, Hayes
Phone: 0794 0747676
Email: info@uni-tyres.com
Available 24/7 for emergency tyre services.
Final Thoughts
The tyre load rating shows the maximum weight your tyre can safely support. Choosing the correct load index ensures:
- Safe handling and control
- Legal compliance
- Longer tyre life
- Improved vehicle stability
- Reduced risk of tyre failure
If you need mobile tyre replacement in Hayes or surrounding areas, contact Uni Tyres Mobile Tyres Services today. We come to your location, anytime.
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