Harley Davidson Motorcycle Tires: Buyer's Guide

Harley Davidson motorcycle tires fall into a few main categories by bike platform: touring, cruiser and sport/performance, each built for different weight, speed and handling needs. The right choice comes down to matching size, load rating and speed rating to your specific model, then picking a tread pattern suited to how and where you ride.

Why Harley Tire Choice Isn't One-Size-Fits-All

A Harley lineup spans small, light Sportsters, heavy baggers loaded with luggage and passengers, and performance-leaning models like the Low Rider S. Each needs a tire built for its weight, speed range and typical use.

Touring bikes such as the Road King, Street Glide and Road Glide carry the most weight, often two-up with saddlebags and a tour pack. Their tires need higher load capacity and stability at sustained highway speed. Softails and Dynas sit in the middle, balancing comfort with some cornering agility. Sportsters are lighter and more flickable, so they can run narrower tires without feeling vague in corners.

Mounting a tire sized or rated for a lighter bike onto a heavy tourer, or vice versa, can affect handling, braking distance and tire life. This is why Harley dealers and tire manufacturers publish size and rating charts by model and year rather than a single universal tire.

Safety: your tires provide the contact patches between the motorcycle and the road. An incorrect size, worn tread or underinflated tire can affect handling, traction and stopping distance. If you are unsure which size or rating your bike needs, confirm it before buying rather than guessing.

Reading the Sidewall: Size, Load and Speed Codes

Every tire sidewall carries a string of numbers and letters that tell you the exact spec, and reading it correctly is the fastest way to avoid buying the wrong tire.

Size Format

Harley tires use one of two common formats:

• Metric, like 180/65B16, where the first number is width in millimeters, the second is aspect ratio (sidewall height as a percentage of width), and the last is rim diameter in inches.
• Alpha-numeric, like MT90B16, an older format still used on some cruiser-style tires.

The letter after the aspect ratio (B or R) tells you construction: B for bias-belted, R for radial. Harley touring, cruiser and performance models may specify different tire constructions. Check the required construction for your exact model and year, including any front-and-rear pairing requirements. Never assume one is interchangeable with the other on the same bike without checking your model's requirement.

Load and Speed Ratings

After the size you will see a load index number and a speed rating letter, for example "83H." The load index corresponds to a maximum weight the tire can carry per tire at a given pressure, and the speed letter indicates the maximum sustained speed the tire is rated for. Heavier touring bikes typically need a higher load index than lighter cruisers, and the rating must meet or exceed what the manufacturer specifies for your exact model and year, not just feel "close enough."

For correct inflation once you have the right tire mounted, our motorcycle tire pressure guide covers how to find and maintain the right PSI for your bike.

Matching Tires to Your Harley Model Type

Touring Models

Road King, Street Glide, Road Glide and Electra Glide models carry the most weight and spend the most time at sustained highway speed, often fully loaded with a passenger and gear. Tires for these bikes prioritize load capacity, stability in crosswinds and mileage. Many riders report touring tires lasting longer on the rear than sport-oriented tread patterns, though actual mileage varies widely with riding style, load and tire pressure maintenance. Confirm the exact size and load rating for your specific touring model and year before ordering.

Softail and Dyna Models

These bikes blend cruiser comfort with more cornering clearance than a full tourer. Tire choice here often comes down to a tread pattern that balances wet grip, straight-line stability and some lean-angle confidence, since Softails are ridden on twisty roads more often than loaded tourers. Size and rating still need to match your specific model, since Softail variants range from relatively light Street Bobs to heavier Heritage Classics.

Sportster and Lighter Models

Sportsters are narrower and lighter, so they typically use smaller tire sizes than Softails or tourers. Riders often prioritize cornering feel and lighter steering effort here over outright load capacity. If you plan to add luggage or ride two-up regularly on a Sportster, double check that the stock tire size and rating still covers the added weight, since some owners upgrade to a slightly higher load range for that use case.

Performance and CVO Models

Models like the Low Rider S or CVO performance bikes may call for a tire with a higher speed rating and stickier compound for more aggressive cornering and braking. These tires often wear faster than touring-oriented rubber in exchange for better grip, which is a reasonable tradeoff for riders who prioritize handling over tire life.

Choosing Between Tire Brands and Tread Types

Harley Davidson does not manufacture its own tires. Models typically ship with tires from brands like Michelin, Dunlop, Metzeler or Bridgestone, and any of these brands also sell replacement tires sized for Harley models. Choosing between them usually comes down to three factors:

No single tire wins on all three, so decide which matters most for your riding before comparing specific models. A tire shop or your owner's documentation can confirm which sizes and ratings are approved for your bike, since running a tire below the specified rating is a safety issue, not just a performance tradeoff.

When to Replace and What to Check

Tread depth is the easiest check. Use a tread depth gauge and inspect the wear indicators. Check the applicable legal minimum and replace sooner if wet grip has deteriorated, especially on the rear tire which wears faster under acceleration. Also inspect for sidewall cracking, bulges or flat-spotting from sitting parked for long periods, since a tire can look like it has plenty of tread left while still being unsafe due to age-related rubber degradation. For more detail on wear patterns and replacement timing, see our guide on how often to replace motorcycle tires.

Safety: a tire that is cracked, unevenly worn or past its service life can fail without warning, especially at highway speed on a loaded touring bike. If you notice cracking, bulging or a tire more than five to six years old regardless of tread depth, have it inspected by a qualified mechanic or tire shop before your next ride.

If you are not sure which size, load rating or tread type fits your exact Harley model and year, a parts lookup or your model's spec sheet is the most reliable source rather than guessing from a general chart. For questions about your own bike, MotoDoc lets you choose the make, model and year, then ask by text or voice and attach a photo of a part or a warning light.