Shinko Motorcycle Tires SR777 180/65-16 Rear Cruiser Tire — Black Wall, Aramid-Belted Comfort & Load Stability

The Shinko 87-4599 SR777 (and H.D. variant) is a 180/65-16 rear cruiser street tire engineered for confident traction, comfort and heavier-load stability on V-twin and metric cruisers.

This 16-inch rear tire combines a grippy rubber compound, purposeful tread siping and groove patterns, and an aramid-belted carcass to balance handling, durability and ride comfort for cruiser riders. Available in both the standard SR777 and a heavy-duty SR777 H.D. version with reinforced construction, the 87-4599 is sized and rated for common cruiser applications where a sturdy rear tire is required. Below you'll find clear answers to the most common buyer questions about fit, performance and construction.

Will this tire fit my cruiser and what are the key specifications?

The 87-4599 is a 180/65-16 rear street tire designed primarily for cruiser motorcycles, including many V-twin and metric cruiser models. Confirm fitment with your bike's placard or a tire professional before purchase.

• Tire size: 180/65-16
• Position: Rear
• Load rating: 81
• Speed rating: H
• Intended use: Street cruiser application

How does the tread and compound affect wet and dry traction?

The SR777 tread combines functional siping and directional grooves to channel water and maintain contact on wet pavement while still providing a large contact patch for dry grip. The compound is formulated to offer a balance of traction and rider comfort rather than a race-oriented, short-life compound.

• Functional siping enhances bite on slick surfaces
• Groove pattern helps evacuate water efficiently
• Compound tuned for grip plus longer wear and ride comfort

What does the Heavy Duty (H.D.) version change for handling and load?

The SR777 H.D. adds a reinforced carcass for riders who want added stability under load, heavier accessories, or two-up riding. Reinforcement and aramid belting improve lateral stability and help the tire maintain its shape during hard acceleration or sustained highway speeds.

• Reinforced carcass for improved stability
• Aramid belted for increased load capacity and shape retention
• More planted feel during cornering and acceleration

How should I choose between SR777 standard and SR777 H.D.?

Pick the standard SR777 for solo riders or lighter setups prioritizing comfort and predictable handling. Choose the H.D. if you carry heavier loads, ride two-up frequently, or want a firmer feel and increased stability at speed.

• Standard: comfort-focused, everyday cruising
• H.D.: reinforced for heavier loads and stability
• Both: designed for street use with balanced wet/dry traction

Who this tire is for: The Shinko 87-4599 SR777 series suits cruiser riders who need a dependable rear street tire with a 16-inch rim fitment, load rating 81 and H speed rating. It’s targeted at owners of V-twin and metric cruisers seeking improved wet-weather confidence, comfortable highway miles and the option of a heavy-duty construction for heavier bikes or frequent two-up riding. Verify fitment with your motorcycle’s placard or a qualified tire professional; this product data is intended for buyers in the United States and Canada and should be cross-checked with manufacturer or shop sources.