Upsizing tyres on a Hyundai Grand i10 can enhance its appearance, improve handling, and potentially offer a marginal increase in grip. However, incorrect upsizing may negatively affect ride quality, fuel efficiency, speedometer accuracy, and even compromise safety.
This article walks through everything you need to know—OEM specifications, tyre-dimension basics, safe and caution ranges, recommended upsizes, and the trade-offs involved—so that you can make an informed decision.
Why Grand i10 Owners Consider Tyre Upsizing
The Hyundai Grand i10 is a best-seller for a reason: it’s practical, reliable, and well-suited for Indian cities and highways. But if you’ve ever looked at your Grand i10 and wished for chunkier tyres, a slightly higher ride, or a sportier feel, you’re not alone. I’ve seen that most sporty owners of the Grand i10 love to have the stock tyre replaced with a bulkier one.
Common reasons for this include:
- Aesthetics: Larger wheels with lower-profile tyres give the Grand i10 a more aggressive stance.
- Handling: A larger contact patch can mean better grip, especially on twisty roads.
- Ground Clearance: Useful for India’s notorious speed breakers and potholes.
- Possible Braking Benefit: In certain conditions, a wider tyre can shorten braking distances.
Stock Tyre Sizes for Hyundai Grand i10
Your first step: know your car’s original tyre size. The Grand i10’s all the models, i.e Magna/Sportz/Ast, typically come with the factory-fitted 165/65 R14 tyres.
You’ll find these numbers on the tyre’s sidewall (look for a code like “165/65 R14”), in your owner’s manual, or sometimes on a sticker inside the driver’s door.
Pros & Cons of Tyre Upsizing on Grand i10
Advantages:
- Better Grip: Wider tyres give better road contact, especially useful during monsoon or hilly drives (Michelin Technical Data, 2023) .
- Improved Looks: A filled wheel arch is a subtle, sporty upgrade.
- Slightly Higher Ground Clearance: Even a 2% upsize can help with rough roads.
Drawbacks:
- Heavier Steering: Wider tyres can make steering a touch heavier at low speeds.
- Possible Drop in Mileage: Increased rolling resistance can drop fuel efficiency by 1–3%.
- Speedo Error: Speedometer and odometer may show less than the actual.
Recommended Hyundai Grand i10 Tyre Upsize Chart
The recommended tyre upgrade options for Grand i10 are: 155/80 R13, 175/65 R14 and 175/60 R14.
| Original | Possible Upsize | Diameter Change (%) | Status |
|---|---|---|---|
| 165/65 R14 | 175/65 R14 | +1.55% | Safe |
| 165/65 R14 | 155/80 R13 | +1.42% | Safe |
| 165/65 R14 | 175/60 R14 | -0.79% | Safe |
Load Index & Speed Rating
- Load Index (LI):
For a Grand i10, the stock tyre LI is typically 79 (437 kg). If upsizing to 175/65 R14 or 185/60 R14, select a tyre with a minimum LI 82 (475 kg) or higher. That extra capacity ensures you’re within the margin when carrying passengers or luggage. - Speed Rating (SR):
Stock SR is usually T (190 km/h). Upsizing tyres often come in H (210 km/h) or V (240 km/h) ratings. Anything above T is fine—Grand i10 top speed not near these limits, so focus primarily on proper LI.
Legal & Warranty Considerations for Grand i10 Tyre Upsizing
You need to consider the following factors before upgrading your i10 tyres:
- Manufacturer Warranty
- Upsizing beyond OEM may void certain aspects of warranty coverage (e.g., alignment claims). Always check with your Hyundai authorised service centre.
- Insurance Implications
- In case of an accident, an insurance adjuster may note non-OEM tyre sizes as a factor. Keep invoices of wheels and tyres to demonstrate that load/velocity ratings meet or exceed OEM specs.
- Regional Regulations
- Indian Motor Vehicle Rules don’t explicitly bar mild upsizing, but tyres must have a valid BIS (Bureau of Indian Standards) certification mark.
- Ensure the entire width/diameter combination is declared for that rim size to avoid legality conflicts.
FAQ: Grand i10 Tyre Upsizing
Is it safe to upsize Grand i10 tyres to 175/65 R14?
Yes, it’s within 2% of stock size and commonly chosen for better grip and looks.
Will upsizing affect my warranty?
Not if you stay within manufacturer-recommended limits. Always check your Grand i10’s car manual and consult your dealer.
What’s the maximum safe width for the Grand i10?
Typically, 185 mm is considered safe with the right profile and rim size, but always check with an upsizing calculator.
Can I use this calculator for all other cars?
No, you can use our car tyre upsize calculator for all cars. The tool listed on this page is exclusively built for the Grand i10.