The 2018 Honda Civic comes equipped with a variety of tire sizes depending on the trim level. Most trims use 16, 17, or 18-inch tires, while the high-performance Type R model is equipped with 20-inch tires. This article will provide a detailed breakdown of the 2018 Honda Civic tire size options for each trim level.

Overview Of 2018 Honda Civic Trim Levels

The 2018 Honda Civic is available in multiple body styles and trim levels, ranging from the affordable LX to the sporty Type R. Here is an overview of the major trims:

Sedan

1. LX
2. LX Sense
3. EX
4. EX Sense
5. EX-L
6. EX-L Nav
7. EX-L Sense
8. EX-T
9. EX-T Sense
10. Touring

Coupe

1. LX
2. LX-P
3. EX-T
4. Touring

Hatchback

1. LX
2. LX Sense
3. EX
4. EX Sense
5. EX-L
6. EX-L Sense
7. Sport
8. Sport Touring

Type R

1. Type R Touring

Tire Sizes By Trim

The 2018 Honda Civic comes equipped with one of four tire sizes depending on the model. Here is a detailed breakdown of the tire size by trim level:

P215/55hr16

The following trims use a 215/55R16 size tire:

1. Sedan LX
2. Sedan LX Sense
3. Coupe LX
4. Hatchback LX
5. Hatchback LX Sense

This is the standard tire size used on the base models. The 16-inch wheel has an overall diameter of 25.7 inches.

P215/50hr17

The 17-inch tires measure 215/50R17 and are equipped on these trims:

1. Sedan EX
2. Sedan EX Sense
3. Sedan EX-L
4. Sedan EX-L Nav
5. Sedan EX-L Sense
6. Sedan EX-T
7. Sedan EX-T Sense
8. Coupe EX-T
9. Hatchback EX
10. Hatchback EX Sense
11. Hatchback EX-L
12. Hatchback EX-L Sense

With a 17-inch wheel, the overall diameter is 25.7 inches.

P235/40wr18

The largest tire offered on most models is a 235/40R18 size fitted to an 18-inch wheel. Trims equipped with this tire include:

1. Sedan Touring
2. Hatchback Sport

The overall diameter of this tire and wheel combo is 26.1 inches.

P245/30yr20

The Type R performance model comes equipped with 245/30ZR20 tires mounted on 20-inch wheels. This Combination results in a larger overall diameter of 26.7 inches.

Wheel Sizes

Along with the tire sizes, there are four wheel sizes used on the 2018 Civic depending on trim level:

16-inch

The 16-inch wheel has a width of 7 inches and is used on trims with P215/55HR16 tires.

17-inch

The 17-inch wheel is 7 inches wide and equipped on trims with P215/50HR17 tires.

18-inch

An 18-inch by 8-inch wide wheel is fitted on models with P235/40WR18 tires.

20-inch

The 20-inch wheel has a width of 8.5 inches and is paired with the P245/30YR20 tires on the Type R.

Complete Tire Size And Wheel Pairings

Below is a complete summary of the 2018 Honda Civic tire and wheel combinations organized by trim level:

Sedan

Coupe

Hatchback

Type R

Is It Ok To Buy 2 Tires Instead Of 4?

It is generally not recommended to only replace two tires at a time. Best practice is to replace all four tires simultaneously, even if two seem to be in better condition. This ensures even wear and traction since all four tires will have the same tread depth. Mixing tires with different wear levels can impact handling, steering, and braking.

Replacing just two tires can also void a tire warranty. Some exceptions could be made if two tires are damaged and the other two have very low mileage, but this should be evaluated carefully.

Can I Use 2 Different Brand Of Tires?

It is not advisable to use two different tire brands on the same vehicle. Tires have different tread patterns, rubber compounds, and other design characteristics between brands. Mixing brands can negatively affect the ride, handling, braking, traction, and noise. It also makes rotating tires impossible. 

The best practice is to always replace all four tires at once with the same brand. However, if two tires are damaged and replacements of the same brand are unavailable, using two different brands on separate axles may be possible for a short time until a full set of the same tire can be purchased. This is a temporary fix only.

Should All 4 Tires Be The Same?

Yes, all four tires on a vehicle should be identical in size, brand, model, speed rating, and load index. Having uniform tires allows for even wear, balanced handling, optimal traction, and proper operation of systems like ABS and traction control. The tread depth and tire pressure should also be consistent across all four tires. 

Never mix different size tires on the same axle. Some exceptions could be made for mixing tire brands or models out of necessity, but only temporarily until a matching set can be installed. For optimal safety and performance, always use four identical tires.

Are All Honda Civic Tires The Same Size?

No, Honda Civic models come equipped with different tire sizes depending on the year, trim level, and options. Sizes range from 15″ to 19″ in diameter. Some common sizes are 185/65R15, 195/65R15, 215/55R16, 215/50R17, and 235/40R18, but confirm the specific tire size for your Civic model and year. 

The tire information is located on a placard normally found on the driver’s side door jamb or in the owner’s manual. Do not assume all Civics use the same tire size, always check the size specified for your exact model. Install the same size tires that came equipped from the factory.

Conclusion

The 2018 Honda Civic is equipped with tire sizes ranging from 16 to 20 inches in diameter depending on model and trim level. The most common sizes are 16 and 17-inch, while 18-inch tires are limited to higher trims. Only the high-performance Type R receives 20-inch tires. Honda optimized each trim with the ideal tire and wheel combination to match the engine and driving dynamics.

Also Read:

• What Size Tires Are On A 2020 Honda Civic?
• 2022 Honda Civic Tire Size
• What Size Tires Are On A 2019 Honda Civic?
• What Size Tires Does A 2003 Honda Civic Have?