28 Inch Tire Size Chart | Common Widths Mapped

A 28-inch bike tire usually fits a 622 mm rim, with size shown by width in millimeters and an ETRTO code.

If you’re trying to replace a worn tire, the words “28 inch” can send you in the wrong direction. On many road, hybrid, city, trekking, and touring bikes, that label points to a wheel built around a 622 mm bead seat diameter. That is the same rim diameter used by 700C tires, which is why riders so often see both names tied to the same wheel.

The catch is simple: inch labels are rough, while the full size code is precise. A sidewall marked 37-622 tells you far more than “28 x 1.40” ever will. Once you know how to read that code, picking the right replacement gets much easier.

This article lays out the sizes most riders run into, then shows what each one usually feels like on the road or path. You’ll also see the fit checks worth doing before you order, so you don’t end up with a tire that rubs the frame, squeezes your fenders, or sits badly on the rim.

Why 28 Inch Can Mislead

The plain inch label came first and stuck around because it’s easy to say. The problem is that it does not pin down one exact rim diameter. Schwalbe notes that inch sizing is approximate, and that both 622 mm and 635 mm tires have been called 28 inches in the market. That is why an old city bike, a classic roadster, and a modern hybrid can all carry “28 inch” wording while still needing different rubber.

That’s also why two tires with almost the same sounding name may not swap cleanly. One may mount right away. The other may be far too loose or far too tight. When you shop by the precise code instead of the marketing label, that whole mess goes away.

The Number That Matters Most

The safer match point is the ETRTO tire size designation. In a size like 37-622, the first number is the tire’s nominal width in millimeters and the second number is the tire’s inner diameter, which must match the rim. Schwalbe also states that 700 x 35C uses the same 622 mm diameter, so 28-inch, 700C, and 622 often meet in the same place.

That does not mean every 28-inch tire fits every 622 wheel with equal results. Width still matters. A 25 mm road tire and a 47 mm comfort tire can both fit the same bead seat diameter, yet they ride, clear, and inflate in very different ways.

Where To Check Your Current Tire

Start with the tire sidewall. You’ll usually find one of these patterns: 37-622, 700 x 35C, or 28 x 1.40. If you can still read the tire, copy the full marking, not just the big “28” or “700C” text. If the sidewall is gone, check the bike manual, the brand’s size chart, or the rim sticker.

Also look at frame clearance. Road calipers, close fenders, chainstays, and fork crowns can limit what width you can use even when the rim diameter is right. A tire that “fits the wheel” may still be a bad match for the bike around it.

28 Inch Tire Size Chart For Common 700C Widths

Most modern 28-inch tires for city, road, trekking, and light gravel bikes use a 622 mm rim diameter. The chart below shows the size names riders see most often and the kind of riding each width tends to suit.

Common label	ETRTO size	Usual fit and feel
28 x 1.00	25-622	Narrow road setup with a firm, fast feel on smooth pavement
28 x 1.10	28-622	Road and fitness bikes that want speed with a bit more cushion
28 x 1.20	30-622	Endurance road and light all-road riding
28 x 1.25	32-622	Urban, fitness, and light touring use
28 x 1.35	35-622	Daily commuting with a nice balance of roll and comfort
28 x 1.40	37-622	Trekking and hybrid bikes that split time between streets and rougher paths
28 x 1.50	40-622	Touring, mixed-surface riding, and extra cargo weight
28 x 1.60	42-622	Hybrid and light gravel setups with more grip and air volume
28 x 1.75	47-622	Comfort hybrids, city bikes, and rough pavement
28 x 2.00	50-622	Wide urban or gravel use where traction and bump control matter more than speed

How Width Changes The Ride

Once the 622 diameter is confirmed, the next choice is width. Narrow tires tend to feel quicker on clean pavement and usually weigh less. Mid-width tires smooth out broken roads without making the bike feel dull. Wide tires add air volume, grip, and a calmer ride on coarse streets, towpaths, and hard-packed dirt.

There is no single “right” width for every 28-inch wheel. A fast commuter might love 32-622. A city bike on cracked roads may feel better on 37-622 or 40-622. A loaded touring bike may want the extra air and stability of 42-622 or 47-622.

Narrow To Mid-Width Picks

If your bike came with 25 mm to 32 mm tires, stay close to that range unless you’ve checked the frame and brake clearance. These widths are common on road, endurance, and fitness bikes. They roll well, feel direct, and keep the steering lively.

That said, many riders move one step wider when they replace old tires. A jump from 28-622 to 30-622 or from 32-622 to 35-622 can soften rough pavement without changing the character of the bike too much.

Mid-Width To Wide Picks

Widths from 35 mm to 50 mm are common on hybrids, trekking bikes, city bikes, and plenty of gravel-adjacent setups. They give you more room to run lower pressure, which can make chipped asphalt and brick streets feel far less harsh. They also add grip and confidence when the surface stops being smooth.

Before you go wider, check the rim and tire pairing. Continental’s page on tire/rim combinations and ETRTO standards says you should verify tire compatibility, maximum pressure, and rim-maker limits before mounting. Continental also notes that actual tire width can change with rim inner width, so a tire may measure a bit wider or narrower than its printed number.

Fit Checks Before You Buy

A replacement tire can fail in three places: at the rim, at the frame, or under the fender. The rim match comes first. The tire’s diameter code must match the rim’s bead seat diameter. Next comes width. Wider tires need room at the fork, stays, brakes, and mudguards. They also need a rim that can handle that width cleanly.

Pressure matters too. A tire and rim may both accept the same width, yet the safe inflation limit can differ by setup. Hookless rims, hooked rims, inner tubes, and tubeless systems do not all play by the same numbers. When tire packaging and rim guidance list different pressure limits, follow the lower value.

If your current tire is	You can often move to	Check this first
25-622	28-622	Brake and fork clearance on road frames
28-622	30-622 or 32-622	Rim width and measured tire growth
32-622	35-622	Fender gap and chainstay room
35-622	37-622 or 40-622	Frame clearance under load
40-622	42-622 or 47-622	Mudguard width and fork crown space
47-622	50-622	Chainstay, seatstay, and rim approval

A Fast Way To Read The Sidewall

If you want the short working method, read the sidewall in this order:

• Find the ETRTO code. Match the second number to the rim diameter first.
• Match the width to your bike. Stay close to your current size unless you have room to change.
• Cross-check other labels. 700C and 28 inch may both be printed, but the 622 code is the one that settles the fit.
• Allow for real-world growth. Mounted width can shift with rim inner width and pressure.
• Check clearance with the wheel installed. Spin the tire and look for tight spots at the fork, stays, and fenders.

If your bike is older and the markings are messy, don’t guess from the inch label alone. That’s how people end up buying a tire that sounds right and still will not mount. The full code is the clean answer.

For most modern commuters, hybrids, touring bikes, and road-adjacent bikes, a 28-inch tire chart is really a 622 mm chart. Once you read it that way, the sizing stops feeling cryptic. Match the diameter, choose the width that suits the bike and the roads you ride, and you’ll get a tire that fits the wheel and rides the way you want.