The Toyota Glanza is a popular hatchback model based on the Maruti Baleno that is sold in India. As with any vehicle, Glanza owners may wish to change the factory tyre size to alter performance characteristics or aesthetics. Here is a detailed look on impacts of Changing Tyre size in Toyota Glanza and how tyre size can be changed on the Glanza.
Possiblities of Changing Tyre Size in Toyota Glanza
Yes, it is possible to change the tyre size on a Toyota Glanza within certain limitations. The Glanza was designed with sufficient clearance to accommodate minor variations from the OE tyre size. However, there are constraints in terms of how much you can deviate before encountering fitment issues.
Factory Tyre Size on Toyota Glanza
The stock tyre size equipped on the Toyota Glanza by the factory is:
- 185/65 R15 for lower trims
- 195/55 R16 for higher trims
This provides an optimal balance of ride quality, fuel economy, handling agility, braking performance and stability based on Toyota’s testing and specifications.
Limits to Tyre Size Changes
While some flexibility exists, there are practical limits to deviating from the manufacturer’s original tyre size recommendation:
- Width – No more than 10mm above or below factory size
- Aspect Ratio – Within 10 above or below factory ratio
- Diameter – Must stick to OE diameter. No upsizing or downsizing.
Staying within or near these parameters will ensure proper fit, safe handling, gearing and speedometer accuracy on a Glanza.
Potential Benefits of Changing Tyre Size
Here are some of the potential advantages Glanza owners can gain from tweaking tyre dimensions from factory settings:
- Improved ride quality – Lower profile for sportier feel, higher profile for softer ride
- Enhanced handling response – Shorter sidewalls and wider tread reduce flex for better grip
- Aesthetic customization – New look and style for wheels and tyres
- Better braking – Larger diameter wheels can improve braking power
- Fuel economy – Narrower tyres with stiffer sidewalls can increase mpg
Possible Drawbacks of Changing Tyre Size
While benefits are possible, there are also some downsides to be aware of:
- Rubbing and clearance issues from exceeding size limits
- Decreased ride comfort with excessively low profiles
- Diminished fuel economy with wider, heavier tyres
- Reduced traction from sizing down too far
- Handling and stability degradation with oversized tyres
- Speedometer and gearing inaccuracies
- Higher cost of wheel & tyre replacement
Carefully weighing the pros and cons will help determine if changing tyre size is advisable based on your priorities and needs.
Vetted Wheel & Tyre Fitments for Toyota Glanza
Here are some wheel and tyre combinations that have been successfully fitted to the Glanza without rubbing or clearance issues:
| Wheel Size | Tyre Size | Notes |
|---|---|---|
| 15 inches | 185/60R15 | Lower profile option for OE 15″ wheels |
| 15 inches | 195/55R15 | stick to 195 mm width |
| 16 inches | 195/50R16 | Aftermarket 16″ wheels & tyres |
| 16 inches | 205/55R16 | Maintains OE diameter |
Focus on reputable tyre makes designed specifically for the Glanza’s chassis dynamics and weight balance.
Step-by-Step Guide to Changing Tyre Size
Follow these key steps for properly changing tyre size on a Toyota Glanza:
Step 1: Choose New Tyre Size
- Decide on new width and aspect ratio based on goals
- Ensure it stays within 10mm width and 10 aspect points of factory specs
- Get right diameter to match OE circumference
Step 2: Buy New Wheels and Tyres
- For 15 inches, reuse stock alloys with new tyres
- For 16 inches, purchase complete aftermarket wheel & tyre sets
- Stick to reputable brands like Michelin, Bridgestone, CEAT etc.
Step 3: Use Professional Tyre Shop
- Avoid DIY tyre removal/installation
- Use certified experts with proper equipment
- Ensures safety and prevents damage
Step 4: Get Alignment Checked
- Always get wheel alignment done after changing tyre size
- Make minor adjustments to restore optimal geometry
Step 5: Be Aware of Speedo Error
- Slight size deviations will not affect speedometer accuracy
- For more significant changes, get speedometer re-calibrated
Follow these key steps precisely for safe, successful tyre size changes on your Toyota Glanza.
FAQs on Changing Toyota Glanza Tyre Size
Q1. What’s the max tyre size I can fit on 16 inch Glanza wheels?
205/50R16 is about the maximum recommended size for aftermarket 16 inch wheels on a Glanza. Lower profiles like 40 or 35 aspect ratio risk rubbing and offset problems.
Q2. Will smaller tyres improve fuel efficiency on my Glanza?
Yes, going down in width and aspect ratio, e.g. 165/70R15, can potentially improve fuel economy by 1-2 mpg through reduced rolling resistance. Ensure proper inflation.
Q3. What are some reputable tyre brands for my Glanza?
Recommended tyre makes for optimal grip and performance on a Glanza include Michelin, Bridgestone, Continental, Goodyear, Pirelli, CEAT, Apollo and MRF.
Q4. How much does it cost to change wheel & tyre size on Glanza?
For just tyres, expect ~$300-450 for a set of 4 decent all-season tyres. For wheels & tyres, budget $700-1000+ for a complete set from reputable brands, plus add installation charges.
Q5. Will bigger tyres negatively impact handling on my Glanza?
Significantly increasing size can degrade grip and composure in corners. The Glanza was optimized by Toyota for the original sizes. Modest increases on par with factory specs will not majorly impact handling. Prioritize stickier performance tyres over size alone.
Conclusion
It is possible to safely change tyre dimensions on a Toyota Glanza within constrained limits, allowing owners to tailor performance and aesthetics. Focus on staying near the original widths and aspect ratios specified by Toyota to avoid clearance issues or driving dynamics degradation. Work with qualified tyre technicians for proper fitment and realignment. While some compromises in ride or economy are inevitable, smart tyre sizing tweaks can enhance the Glanza’s capabilities without sacrificing factory engineering.