What Does 112T Mean On A Tire? | Decode It Right

A 112T sidewall code means one tire can carry 2,469 pounds and is rated for speeds up to 118 mph when inflated the right way.

You’ll usually spot 112T near the end of a tire’s sidewall code. It looks small, yet it says a lot. That short mark tells you how much weight one tire is built to carry and the speed class tied to that load.

That matters more than many drivers think. A tire can match your wheel size and still be the wrong pick if its load index or speed symbol is too low. So when you see 112T, you’re not reading a random stamp. You’re reading the tire’s service description.

Here’s the plain-English version. The number 112 is the load index. The letter T is the speed rating. Put them together and you get a fast read on the tire’s carrying ability and its tested speed class.

What Does 112T Mean On A Tire? The Two Parts Broken Down

The code has two pieces, and each one answers a different question.

• 112 tells you the maximum load one tire can carry under the stated conditions.
• T tells you the tire’s speed class under the same sort of controlled conditions.

So a 112T tire is built for a healthy amount of weight, yet it sits in a moderate speed class by passenger-tire standards. That mix is common on crossovers, SUVs, highway tires, and some light-duty truck setups where steady road use matters more than sport driving.

What The 112 Load Index Means

Load index numbers match a standard chart used across the tire trade. At 112, the rating equals 2,469 pounds or 1,120 kilograms for one tire. Multiply that by four and the total tire carrying capacity comes to 9,876 pounds.

That does not mean your vehicle can haul 9,876 pounds. The vehicle’s own gross weight rating and axle ratings still rule. The tire code tells you the tire limit. Your vehicle placard and manual tell you the vehicle limit.

What The T Speed Rating Means

The T tells you the tire’s speed class. In the standard chart, T means 118 mph, or 190 km/h. That figure is a tested ceiling, not a target for daily driving.

That’s the bit many people miss. A T-rated tire is not an invitation to drive at 118 mph. It’s a coded limit tied to lab testing, proper inflation, and the load the tire was rated to carry.

112T Tire Meaning In The Full Sidewall Code

On a real tire, 112T appears as one slice of a longer string. A sidewall might read 255/60R18 112T. Each part has its own job.

• 255 = tire width in millimeters
• 60 = aspect ratio, or sidewall height compared with width
• R = radial construction
• 18 = wheel diameter in inches
• 112T = load index and speed rating

The size part tells you whether the tire fits the wheel and vehicle. The 112T part tells you what that tire is built to carry and how fast that loaded tire is rated to run in testing.

That’s why two tires can share the same size and still not be equal. You may see one tire in 255/60R18 112T and another in 255/60R18 112H. Same size. Different speed class. In other cases, the speed letter may stay the same and the load index may change.

Nearby Ratings Compared Side By Side

If you want to see what changes when one digit or one letter moves, this table makes it easier to spot.

Service Description	Per-Tire Capacity	Max Speed Class
109S	2,271 lb / 1,030 kg	112 mph / 180 km/h
109T	2,271 lb / 1,030 kg	118 mph / 190 km/h
110T	2,337 lb / 1,060 kg	118 mph / 190 km/h
111T	2,403 lb / 1,090 kg	118 mph / 190 km/h
112T	2,469 lb / 1,120 kg	118 mph / 190 km/h
112H	2,469 lb / 1,120 kg	130 mph / 210 km/h
113T	2,535 lb / 1,150 kg	118 mph / 190 km/h
114T	2,601 lb / 1,180 kg	118 mph / 190 km/h

One digit up in the load index adds carrying capacity. One letter up in the speed symbol raises the speed class. That sounds simple, and it is, once you stop treating 112T like one mystery block.

Why 112T Matters When You Buy Replacement Tires

When a tire shop shows you a list of replacement options, it’s easy to lock onto the size and the price. That’s where people get tripped up. The cheaper tire may match your size, yet still carry a lower service description than your vehicle calls for.

Michelin’s load rating and speed rating explainer spells out that replacement tires should meet the vehicle maker’s stated load and speed requirements. That’s why your door-jamb placard, manual, and original tire sidewall all matter during a tire swap.

If your vehicle was fitted with 112T tires from the factory, dropping to a lower load index can leave you with less carrying margin than the vehicle was built around. And if the speed symbol drops below spec, that’s another mismatch you don’t want to brush off just because the tire “fits.”

Where To Check Before You Order

• The sticker on the driver’s door jamb
• Your owner’s manual
• The sidewall of the original equipment tires
• The tire shop’s fitment notes for your exact trim

One more thing: a higher rating doesn’t raise your vehicle’s legal payload or axle limit. It only means the tire itself has more margin than the lower-rated version. Your vehicle’s own ratings still call the shots.

What To Match Before You Buy

Use this as a quick checkpoint when you’re comparing tires in the same size.

Check	What To Match	Why It Matters
Door-Jamb Placard	Recommended size and service description	Shows what the vehicle maker approved
Original Tire	Load index and speed symbol	Gives you a clean starting point
Owner’s Manual	Trim-specific tire notes	Some trims use different specs
Inflation Pressure	Placard pressure, not sidewall max	Load ratings depend on proper inflation
Driving Use	Passenger, cargo, towing, highway	Helps you avoid buying too light a tire

Common Mix-Ups With 112T

Some tire-code mistakes show up again and again. Here are the ones that cause the most confusion.

Mix-Up One: Treating 112T As The Tire Size

It isn’t the size. It sits next to the size, which is why people lump it all together. The tire can be the right size for the wheel and still be the wrong service description for the vehicle.

Mix-Up Two: Thinking The Four Tires Set Your Payload

Multiplying 2,469 by four is useful, yet it doesn’t replace the vehicle’s own ratings. Axles, suspension, brakes, and the vehicle maker’s limits still matter. Tire capacity is one piece of the puzzle, not the whole puzzle.

Mix-Up Three: Ignoring Inflation

Load ratings are tied to proper air pressure. A tire can’t carry its rated load if it’s underinflated. So if you see 112T and think the number alone settles everything, not quite. Air pressure is part of the deal.

Mix-Up Four: Reading The T Wrong

A T at the end of the service description is a speed symbol. A T used at the front of some compact spare size markings means something else. Context matters on the sidewall.

Continental’s speed index chart lays out the standard speed symbols and shows T at 118 mph, or 190 km/h. That can clear up the guesswork fast when you’re staring at sidewall letters in a parking lot.

Where You’ll Usually See A 112T Tire

You’ll often find this rating on heavier passenger vehicles that need decent load capacity without chasing a sport-tire speed class. Think midsize SUVs, family crossovers, some pickup trims, and touring tires built for steady commuting, road trips, and daily errands.

That makes sense when you look at the numbers. A 112 load index gives plenty of carrying room for heavier vehicles, and a T speed class is still well above normal highway speeds in many countries.

If you’re standing in a shop and comparing 112T with 112H or 113T, the right choice comes down to what your vehicle maker called for, how you load the vehicle, and whether the tire is built for the kind of driving you actually do.

The Marking In One Glance

112T means this: the tire is rated to carry 2,469 pounds per tire, and its speed class is T, or 118 mph, under the stated test conditions. The number is load. The letter is speed. Once you know that split, the code stops looking cryptic.

So the next time you spot 112T on a sidewall, you’ll know you’re reading a service description, not a random label. And that makes it much easier to buy the right replacement tire the first time.