If you've got an old Honda Trail 70 sitting in the garage, the first thing you probably need to look at is the state of your ct 70 tires. These little bikes are legendary for their durability, but rubber doesn't last forever. Even if the tread looks okay, forty-year-old rubber gets hard as a rock and loses all its grip. If you're planning on actually riding that vintage mini-bike instead of just letting it look pretty in the corner, getting some fresh rubber should be at the top of your to-do list.
It's honestly surprising how much a new set of tires can change the way these bikes feel. Whether you're buzzing around the neighborhood or hitting some light trails, the right tires make the difference between a sketchy ride and a confident one.
Why the Right Rubber Matters for Your CT70
The Honda CT70 is a unique beast. It's not quite a motorcycle, not quite a scooter, and definitely more than a toy. Because of its small frame and those chunky 10-inch wheels, the tires play a huge role in the bike's suspension. Back in the 70s, Honda didn't give these things the most sophisticated forks or shocks, so the air volume in your ct 70 tires actually handles a lot of the damping.
If you put on tires that are too stiff, every pebble will feel like a boulder. If you go too cheap, you might find yourself sliding out on the first damp patch of pavement you hit. Most people who own these bikes today fall into two camps: the restorers who want everything to look exactly like it did in 1971, and the riders who just want the best performance possible for weekend fun.
Understanding the Standard CT 70 Tire Size
When you start shopping, you'll notice that the standard size for ct 70 tires is almost always 4.00-10. It's a bit of a beefy size for such a small rim, but that's what gives the bike its iconic "fat tire" look.
Now, you might see some people trying to squeeze different sizes on there, but sticking to the 4.00-10 is usually the smartest move. It maintains the correct ride height and ensures that you won't have any clearance issues with the fenders or the chain guard. The 10-inch rim is common in the scooter world too, but you have to be careful. A lot of scooter tires are designed for smooth pavement and have very thin sidewalls. For a CT70, you want something a bit more rugged that can handle the occasional dirt path.
Choosing Between Street, Dirt, or Dual Sport
This is where you have to be honest with yourself about where you're actually going to ride. Back in the day, these were marketed as "Trail" bikes, but let's be real—most of them spent a lot of time on suburban driveways.
The Classic Look: Bridgestone Trail Wings
If you're doing a factory-spec restoration, there's really only one choice: the Bridgestone Trail Wing. These are often referred to as the "original" ct 70 tires. They have that classic blocky tread pattern that just looks right on a vintage Honda. They provide a decent balance for both dirt and street, though they aren't particularly amazing at either. But hey, for a nostalgic build, you can't beat the aesthetic. They're a bit more expensive than some other options, but for many owners, the look is worth the premium.
Budget-Friendly Options: Shinko and Kenda
If you aren't obsessed with having the Bridgestone name on the sidewall, Shinko and Kenda make some fantastic alternatives. The Shinko SR241 or 244 series are huge favorites in the mini-bike community. They offer a "trials" style tread that grips surprisingly well on dirt and gravel but doesn't feel too vibratey on the road.
Kenda also offers some very affordable ct 70 tires that are workhorses. They might not be the prettiest, but they hold up well and get the job done. If you're building a "rider" rather than a "show bike," these brands offer the best bang for your buck.
Performance on the Tarmac
Maybe you've resto-modded your CT70 with a bigger engine—like a 125cc or 140cc Lifan swap—and you're mostly using it as a street cruiser. In that case, you might want to ditch the knobbies entirely. There are some street-biased 10-inch tires that will make the bike feel much more stable at higher speeds. However, keep in mind that putting slick street tires on a Trail 70 is a bit like wearing tuxedo shoes with cargo shorts—it works, but it looks a little funky.
Tips for Installing Tires on Those Small Rims
I'll be the first to admit it: changing ct 70 tires can be a real pain in the neck. The rims are small, which means there isn't much room to work with tire irons. One of the best things about the CT70, though, is the split-rim design.
Unlike a modern motorcycle where you have to pry the tire over a solid rim, the CT70 rims actually bolt together in two halves. This should make it easier, but old rims often have rust inside that "glues" the tire to the metal.
Here's a pro tip: use plenty of soapy water or a dedicated tire lube. Don't try to manhandle it with a screwdriver, or you'll just end up scratching your freshly painted rims or pinching the tube. Oh, and always buy new tubes. Don't try to reuse the 30-year-old tubes that were in there. It's not worth the risk of a flat five minutes into your first ride.
Maintenance and Safety: Don't Ignore the Dry Rot
Since many of these bikes sit for long periods, dry rot is the silent killer of ct 70 tires. You might have plenty of tread left, but if you see tiny cracks in the sidewall or between the tread blocks, those tires are toast.
Rubber dries out over time, and once it loses its elasticity, it can't grip the road properly. Even worse, the structural integrity of the tire is compromised. I've seen old tires literally chunk apart while riding. It's just not worth it. If your tires are more than 6 or 7 years old, it's probably time to swap them out regardless of how they look.
Also, keep an eye on your tire pressure. Because the tires are so small and have so much sidewall, running them low can make the bike handle like a bowl of Jell-O. Check the manual (or the sticker on the frame if it's still there), but usually, somewhere around 15-20 PSI is the sweet spot depending on your weight.
Final Thoughts on Keeping the Dream Alive
At the end of the day, picking out new ct 70 tires is one of the easiest ways to refresh your vintage Honda. It's a relatively cheap project that you can do in an afternoon, and it pays off immediately in both looks and safety.
Whether you go with the period-correct Bridgestones or some modern Shinko dual-sports, you're going to enjoy the ride a lot more when you aren't worried about a blowout or sliding out on a turn. These bikes were built for fun, and nothing kills the fun faster than bad rubber. So, grab some tire spoons, a bucket of soapy water, and get those new shoes on your Mini Trail. You'll thank yourself the next time you kick it over and head out for a spin.