What Does 98H Mean on a Tire? Load, Speed & Rating Guide
A tire marked 98H is showing its service description: 98 is the tire’s load index, and H is its speed rating. In plain terms, a 98H tire can carry up to 1,653 pounds (750 kg) per tire when properly inflated, and the H rating is designed for speeds up to 130 mph (210 km/h) when the tire is in safe condition.
Quick Answer
On a tire, 98H means the tire has a 98 load index, equal to 1,653 pounds per tire, and an H speed rating, equal to 130 mph. Match 98H to your vehicle’s door placard or owner’s manual before buying replacement tires.
Key Takeaways
- 98 is the load index, meaning the tire can support up to 1,653 pounds when properly inflated.
- H is the speed rating, meaning the tire is rated up to 130 mph under proper use and safe tire condition.
- The correct rating is the one listed by your vehicle maker, usually on the driver-side door placard and in the owner’s manual.
- A higher load or speed rating may be acceptable in many cases, but a lower rating can reduce safety and handling unless the vehicle maker approves it.
- 98H does not tell you everything about a tire. You should also check tire size, load range, tire pressure, tread, DOT date code, and UTQG information.
What Does 98H Mean on a Tire?
A tire marked 98H uses two ratings together. The 98 load index tells you the maximum weight each tire can carry when inflated to the correct pressure. The H speed rating tells you the maximum speed category the tire is designed to handle when it is not damaged, overloaded, underinflated, or altered.
For a 98H tire, the numbers mean:
| Marking | What It Means | Why It Matters |
| 98 | Load index of 98, equal to 1,653 lb / 750 kg per tire | The tire must be able to carry the vehicle, passengers, cargo, and normal driving loads. |
| H | Speed rating of 130 mph / 210 km/h | The tire’s speed capability must meet or exceed the vehicle maker’s requirement. |
| 98H | Load and speed rating used together | Both ratings must match the tire size and vehicle requirements, not just one of them. |
You should treat 98H as a capability code, not a promise that the tire is safe at every weight, pressure, road condition, or speed. Tire condition, correct inflation, tread depth, weather, and vehicle load all matter.
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How to Read 98H Tire Markings
You will usually find 98H near the end of the tire size code on the sidewall. A common example looks like this:
225/55R18 98H
- 225 means the tire is about 225 millimeters wide.
- 55 means the sidewall height is 55% of the tire width.
- R means radial construction.
- 18 means the tire fits an 18-inch wheel.
- 98 is the load index.
- H is the speed rating.
Read the full tire size and service description together. A tire that has the right 98H rating but the wrong width, aspect ratio, wheel diameter, or load range may still be wrong for your vehicle.
Pro Tip: Check both the tire sidewall and the driver-side door placard. The sidewall tells you what is currently installed. The placard tells you what the vehicle maker recommends.
What the 98 Load Index Means
The 98 load index means the tire can carry up to 1,653 pounds when it is properly inflated and used within its design limits. That number applies per tire, not for the full set of four tires.
Load index matters because the tire must support the vehicle’s weight plus people, cargo, fuel, and driving forces. If you use a tire with too low a load index, the tire may run hotter, flex more than intended, wear faster, and become more likely to fail under stress.
Many passenger-car load indexes fall roughly in the 75 to 100 range, while passenger-car and light-truck charts extend higher. A 98 load index is common on many sedans, crossovers, small SUVs, and some performance-oriented tire sizes.
When replacing tires, choose the load index listed on your vehicle placard or owner’s manual. In many cases, using a higher load index is acceptable, but using a lower load index is not recommended unless your vehicle maker specifically allows it.
Load index is separate from UTQG rating, treadwear grade, traction grade, and temperature grade. Those markings describe other tire characteristics, not the tire’s basic weight capacity.
What the H Speed Rating Means
The H speed rating means the tire is rated up to 130 mph or 210 km/h when used correctly. This rating does not mean you should drive at that speed. It only describes the tire’s tested speed capability under controlled conditions.
Speed ratings apply only when the tire is in safe condition. A tire that is underinflated, overloaded, damaged, repaired incorrectly, badly worn, or exposed to extreme heat may not safely perform up to its rating.
You will often see H-rated tires on sedans, coupes, crossovers, and vehicles that need a balance of everyday comfort and responsive handling. Some touring and all-season tire performance options also use H ratings, depending on size and model.
Warning: Do not choose a lower speed rating or lower load index just because the tire fits the wheel. The safest replacement is the tire size and service description recommended by your vehicle maker.
Why 98H Matters for Safety
Your 98H tire rating matters because it helps match the tire to your vehicle’s weight, performance needs, and handling design. If the tire’s load index is too low, the tire may be overloaded. If the speed rating is too low, the tire may not match the vehicle’s heat and speed requirements.
Correct tire ratings also support predictable steering, braking, and stability. The tire with the lowest load or speed rating on the vehicle can become the limiting tire, especially when the vehicle is loaded or driven at highway speeds.
Rating alone is not enough. You also need correct cold tire pressure, enough tread depth, no visible sidewall damage, and regular rotation when your vehicle maker recommends it. Tire pressure is especially important because a tire’s load capacity depends on proper inflation.
A 98H tire is only the right tire if the full tire size, load index, speed rating, pressure requirement, and vehicle placard all agree.
Where to Find 98H on Your Tire
You can usually find the 98H marking on the tire sidewall near the tire size. It may appear after the wheel diameter, such as 225/55R18 98H. If the sidewall is dirty, clean it gently so you can read the full code.
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Sidewall Markings
The sidewall shows the tire’s current size, load index, speed rating, DOT date code, construction type, and other markings. Look for the service description near the end of the size code. In 225/55R18 98H, the service description is 98H.
You may also see markings such as SL, XL, or Extra Load. These refer to load range or reinforced construction, not the same thing as the 98 load index. If your vehicle came with XL tires, do not replace them with Standard Load tires unless the vehicle maker or a qualified tire professional confirms the change is appropriate.
Door Jamb Placard
The driver-side door jamb placard, sometimes called the Tire and Loading Information Label, lists the vehicle maker’s recommended tire size and cold tire pressure. Your owner’s manual may also list approved tire sizes and service descriptions.
When buying replacements, compare the sidewall code with the placard. If the vehicle calls for 98H, replacement tires should meet that full rating or an approved equivalent. If you are changing wheel size or tire type, confirm the new setup with a qualified tire shop.
Can You Use a Higher or Lower Rating Than 98H?
In many everyday replacement situations, using a tire with a higher load index or higher speed rating can be acceptable if the tire size, load range, and vehicle fitment are correct. For example, a 98V tire has the same 98 load index as a 98H tire, but a higher V speed rating.
Using a lower load index or speed rating is different. A 98T tire has the same load index as 98H, but a lower speed rating. That may be acceptable for some vehicles and not acceptable for others. The answer depends on the tire placard, owner’s manual, tire type, and driving conditions.
Do not mix ratings casually. If one tire has a lower speed rating than the others, that lower-rated tire can limit the safe speed capability of the full set. Mismatched tire models, sizes, tread depths, or ratings can also affect braking, traction, and stability systems.
What 98H Does Not Tell You
The 98H marking is important, but it does not describe every part of tire performance. It does not directly tell you:
- Treadwear life: For that, look at UTQG treadwear information when available.
- Wet traction: Load and speed ratings do not replace traction ratings or real-world wet braking performance. Compare tire tests and traction in wet conditions if rain performance matters.
- Winter ability: Look for winter tire markings or all-weather ratings when you drive in snow or ice.
- Tire age: Check the DOT date code to see when the tire was made.
- Correct air pressure: Use the pressure listed on the vehicle placard, not the maximum pressure molded on the tire.
- Vehicle fit: You still need the correct tire size, wheel diameter, load range, and clearance.
If you are comparing tire options, UTQG ratings, tire category, tread design, warranty, and driving conditions can all matter alongside the 98H marking.
Replacement Tire Checklist for 98H Tires
Before you buy a replacement tire marked 98H, check these items:
- Match the full tire size: Do not rely on 98H alone. Match the full code, such as 225/55R18 98H.
- Check the vehicle placard: Use the driver-side door label and owner’s manual as the main guide.
- Meet or exceed the load index: Do not go below the required load index unless the vehicle maker allows it.
- Meet or exceed the speed rating: Choose the required speed rating for your vehicle and tire type.
- Confirm Standard Load or Extra Load: Replace XL tires with the correct load range.
- Use the right pressure: Inflate to the vehicle maker’s cold pressure, not the tire’s maximum sidewall pressure.
- Replace in proper sets: For best handling, use matching tires on the same axle, and follow your vehicle maker’s guidance for all-wheel-drive vehicles.
For broader tire shopping, compare the service description with load and speed ratings, tire category, and the conditions you drive in most often.
Frequently Asked Questions
Which is better, H or T rated tires?
H-rated tires have a higher speed rating than T-rated tires. H is rated up to 130 mph, while T is rated up to 118 mph. That does not automatically make H better for every driver. The better choice is the rating your vehicle maker recommends for your tire size, load, and driving conditions.
What does 225/55R18 98H mean?
In 225/55R18 98H, 225 is the tire width in millimeters, 55 is the sidewall height as a percentage of the width, R means radial construction, 18 is the wheel diameter in inches, 98 is the load index, and H is the speed rating.
What’s the difference between 98V and 98H tires?
98V and 98H tires share the same load index, so both are rated for 1,653 pounds per tire when properly inflated. The difference is speed rating. H is rated up to 130 mph, while V is rated up to 149 mph. Use the rating recommended by your vehicle maker.
What’s the difference between 98H and 98T tires?
98H and 98T have the same load index, but different speed ratings. A 98H tire is rated up to 130 mph, while a 98T tire is rated up to 118 mph. Do not switch from H to T unless your door placard, owner’s manual, or a qualified tire professional confirms it is appropriate.
Can I replace 98H tires with 99H tires?
Usually, a 99H tire has a higher load index than a 98H tire and the same H speed rating, but you still need the correct tire size, load range, and vehicle fitment. Check the door placard and owner’s manual before changing from the original specification.
Is 98H good for highway driving?
Yes, 98H can be suitable for highway driving when it matches your vehicle’s required tire size, load index, speed rating, and inflation pressure. The rating does not replace regular tire checks. Inspect pressure, tread, and damage before long trips.
Conclusion
So, what does 98H mean on a tire? The 98 is the load index, which means the tire can carry up to 1,653 pounds when properly inflated. The H is the speed rating, which means the tire is rated up to 130 mph under proper use and safe condition.
The safest choice is not always the highest rating. It is the tire that matches your vehicle’s full tire size, load requirement, speed rating, load range, and recommended cold pressure. Check the tire sidewall, driver-side door placard, and owner’s manual before replacing 98H tires. If you are unsure, ask a qualified tire professional to confirm the fit.
Understanding load index and speed rating helps you compare tires more confidently, but it is only one part of choosing a safe and suitable tire.
Sources
- NHTSA TireWise — supports tire placard, tire pressure, tread, maintenance, and tire safety guidance.
- Tire Rack: What Is Load Index? — supports load index definition and the 98 = 1,653 lb / 750 kg rating.
- Tire Rack: How Do I Check a Tire’s Speed Rating? — supports H = 130 mph / 210 km/h and speed rating limitations.
- Goodyear: Tire Load Index Chart — supports general passenger-car load index context.
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Milton S-921 pencil tire pressure gauge helps you maintain optimal tire pressure for passenger cars with accurate readings in PSI and kPa. It features a built-in deflator valve for convenient pressure adjustments, plus a single chuck head and nylon indicator bar for easy use on the go. Built from durable plated brass and designed for reliable performance, it’s a practical road trip and cold-weather maintenance tool.
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ETENWOLF T300 is a calibrated digital tire pressure gauge for accurate readings from 3 to 200 PSI across light and heavy-duty vehicles. It includes thermal compensation for reliable performance in extreme cold or heat, with an auto shut-off to extend battery life and an LED for easier reading. The sturdy design supports rugged everyday use, making it ideal for pickups, RVs, and industrial applications.
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