Mo

Yes, you can fit thinner mountain-bike tyres if they match your rim width and frame clearance within ETRTO ranges.

Yes, you can put straight handlebars on a road bike by swapping bars, levers, shifters, and matching brake and clamp standards.

Yes, you can fit road wheels on a mountain bike if the hub, rotor, cassette, and tire clearances all match your frame and brakes.

Yes, you can put road tyres on a gravel bike if the frame, fork, and rims match the tyre size and pressure limits.

Yes, you can put road tires on a hybrid bike if wheel size, rim width, and frame clearance match the tire.

Yes, road tires can go on a 29er mountain bike when the tire size, rim width, and frame clearance all match.

Yes, you can put road tires on a cyclocross bike; verify clearance, rim match, and safe pressures for smooth, fast pavement riding.

Yes, you can mount road bike handlebars on a hybrid, but you must match clamp size and make your brakes and shifters compatible.

Yes, you can fit off-road tires on a road bike if the size, rim match, and frame clearance all check out.

Yes, you can put a small dog in a bike basket if you use a secure harness, a pet-rated basket, and ride within safe limits.