CST CM-A4II Ride Ambro Motorcycle Tyre - 140/70R18
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Product Information
Full details
The CST CM-A4II Ride Ambro 140/70R18 is designed for adventure motorcycle riders who require a balanced, dual-purpose tyre for both paved roads and light off-road terrain. Its key advantage is the versatile tread design that maintains stability at high speeds on tarmac while providing reliable grip on loose surfaces, though it is specifically engineered as an OEM replacement for the QJ Motor SRT 450 RX and may require fitment verification for other models.
All features
| Model Part Number | TM00543200 |
|---|---|
| Brand | CST |
Extended Product Information
FAQs
Is the CST CM-A4II suitable for highway riding?
Yes, the central block pattern is specifically designed to provide stability and handle high speeds on paved roads.
Can I use this tyre on a different motorcycle model?
While it is an OEM fit for the QJ Motor SRT 450 RX, it can be used on other bikes provided the 140/70R18 size matches your rim requirements and clearance.
What makes the nano-silica compound special?
The nano-silica compound improves chemical bonding within the rubber, leading to better grip on wet surfaces and increased overall mileage.
How often should I check the air pressure?
It is recommended to check the tyre pressure every two weeks or before any significant road trip to ensure optimal performance and safety.
Is this a tubeless or tube-type tyre?
The CST CM-A4II is generally designed as a tubeless tyre; however, always verify the specific marking on the sidewall before installation.
Troubleshooting
Excessive vibration at high speed
Check tyre pressure and ensure the tyre has been dynamically balanced by a professional.
Reduced traction in wet conditions
Inspect tread depth to ensure the tyre is not worn below the manufacturer's wear markers.
Rapid or uneven tyre wear
Verify that the wheel alignment and suspension settings match the manufacturer's recommendations for your motorcycle.
Pros and Cons
Pros
- Excellent high-speed stability on pavement
- Effective traction for light off-road use
- Increased wet-weather safety due to nano-silica compound
- Long service life thanks to durable construction
- Stable handling under load
Cons
- Specific 140/70R18 sizing limits compatibility
- Not intended for extreme technical off-road riding
- May require specific rim compatibility checks for non-QJ models
Setup, Compatibility & Care
The CST CM-A4II Ride Ambro (140/70R18) is primarily intended for the QJ Motor SRT 450 RX as an OEM replacement. Before installation, verify your motorcycle’s owner manual to ensure this size is approved for your specific swingarm clearance and rim width. Always have tyres mounted by a professional technician to ensure proper bead seating and balancing.
Regular care includes checking the tyre pressure every two weeks or before long trips, as specified in your bike's manual. Inspect the tread for embedded rocks or debris after off-road use, and check the sidewalls for any signs of cracking or aging every six months.