What tires will fit a 20 inch rim?

Tires that fit a 20-inch rim are those sized with an R20 bead diameter, such as 245/40R20, 275/40R20, or 315/35R20. The exact width that will fit depends on your rim width, vehicle clearance, and the manufacturer’s specifications.

In practice, you’ll choose from a range of widths and aspect ratios that are compatible with a 20-inch wheel. The best option depends on your rim width, ride preferences, and the vehicle’s clearance. The following guide explains how to identify compatible options and what to check before buying.

How tire sizing works on 20-inch rims

Tire sizes use the format width/aspect ratioRdiameter. For example, 245/40R20 means the tire is 245 mm wide, the sidewall height is 40% of the width, the tire is radial construction, and it fits a 20-inch rim. The overall diameter of the tire is determined by both width and aspect ratio, so two 20-inch tires with different widths and profiles will have slightly different outer diameters. When selecting tires for a 20-inch rim, consider how changes in width and profile affect clearance, ride quality, and performance.

Common 20-inch tire sizes you might encounter

Below is a representative set of tire sizes commonly used on 20-inch rims. The exact fit depends on rim width and the vehicle’s clearance; always verify with a professional and consult the manufacturer’s fitment list.

• 245/40R20


• 255/40R20


• 265/40R20


• 275/40R20


• 285/40R20


• 295/35R20


• 305/35R20


• 315/35R20


• 325/30R20

These sizes cover many high-performance sedans and SUVs that use 20-inch wheels. Exact fitment depends on rim width and the vehicle’s body and suspension clearances; always check manufacturer specifications and confirm with a tire professional.

Rim width and tire width compatibility

Rim width dictates which tire widths can be safely mounted. The following guidelines provide a starting point, but you should confirm with the tire maker or installer for your exact rim profile.

• Rim width 7.0–7.5 inches: typically compatible with 205–225 mm tires.


• Rim width 8.0–9.0 inches: commonly paired with 235–275 mm tires.


• Rim width 9.5–11.0 inches: often used with 285–315 mm tires.

Conclusion: If your rim is 20 inches in diameter, ensure your tire width aligns with the rim width and the vehicle’s clearance, and select a size within the vehicle’s recommended range. When in doubt, consult a tire professional or refer to the vehicle’s owner manual and the tire manufacturer’s fitment charts.

Practical steps to verify fit before buying

To verify fit on a 20-inch rim, follow these steps to ensure proper clearance and performance:

1. Check the vehicle owner’s manual or door placard for the recommended tire sizes and rim widths for your exact model and trim.


2. Measure or confirm your rim width (inside bead seat to bead seat) to ensure the tire width you select is within the recommended range.


3. Consult the tire manufacturer’s fitment guide or talk to a reputable tire retailer to confirm compatibility with your rim width and offset.


4. Consider the overall diameter change and its effect on speedometer accuracy, ABS, and other systems; choose a size that keeps diameter within an acceptable range compared to the original spec.


5. Have an experienced technician mount and balance the tires, and perform a final alignment check if you change tire width or diameter significantly.

If any step cannot be satisfied, revert to a size that is explicitly listed as compatible for your vehicle and rim.

Summary

A 20-inch rim requires tires with an R20 bead diameter and a width that matches the rim width and the vehicle’s clearance. Common examples include 245/40R20, 275/40R20, and 315/35R20, among others. Always verify with the vehicle manufacturer and a tire professional to ensure proper fitment, load and speed ratings, and overall ride quality. Proper selection preserves safety and performance across your wheel setup.

What size tires can you fit on a 20 inch rim?

20" Options

• 145/60-20.
• 145/65-20.
• 155/60-20.
• 175/55-20.
• 195/50-20.
• 215/45-20.
• 225/30-20.
• 225/35-20.

How big is a 275-60 R20 tire?

A 275/60R20 tire has an overall diameter of approximately 33 inches and a width of about 10.8 inches. The tire is designed for a 20-inch rim, and its total height is 33 inches, with the width of the sidewall being 6.5 inches.
 

• Tire Dimensions:
  • Width: 275 mm (10.8 inches)
  • Aspect Ratio: 60% of the width, which translates to a sidewall height of approximately 6.5 inches
  • Rim Diameter: 20 inches
  • Overall Diameter: Approximately 33 inches

What is the most common 20 inch tire?

The most common 20-inch tire sizes include 255/55R20, 275/55R20, and 245/40R20, according to NeoTires. Other popular sizes for various vehicles, such as SUVs, crossovers, and trucks, are also frequently seen, like 265/50R20 and 275/60R20. 

• 255/55R20: A common size for many SUVs and crossovers, such as the BMW X7 and Lincoln Aviator. 
• 275/55R20: Frequently used on large SUVs and trucks like the Cadillac Escalade and Chevrolet Silverado. 
• 245/40R20: This is a popular option for sporty and high-performance sedans that prefer a lower profile. 
• 265/50R20: Another common size, often found on various crossovers and SUVs. 
• 275/60R20: A popular size for trucks and larger SUVs. 

How do I know which tires will fit my rims?

To find the right tires for your rims, check the tire placard on the driver's side door jamb, the owner's manual, or the sidewall of your current tires to find the correct rim diameter, which is the last number in the tire size code (e.g., the '17' in P215/60 R17). You also need to ensure the tire's recommended rim width matches your rim's width, which is a crucial factor for proper fit and performance. 
This video explains how to choose the best tire size: 58sFitment Industries GarageYouTube · Apr 3, 2021
How to find your rim size

• Check the driver's side door jamb: A sticker with the vehicle's recommended tire and rim size is often located here. 
• Consult your owner's manual: The manual contains detailed information about your vehicle's original equipment, including tire size. 
• Look at the tire sidewall: The size of your current tires will be written in a code like P215/60 R17. The last number (17 in this example) is the rim diameter in inches. 
• Measure the rim yourself: If you can't find the code, you can measure the rim's width from inside one bead to the other. You will also need to find or measure the rim's diameter and bolt pattern, as explained in this YouTube video. 

How to determine the correct tire width

• Find your rim width: You can find the width stamped on the back of the hub, or by measuring it. 
• Consult the Tire and Rim Association (TRA) standards: The TRA provides standards that show the range of approved rim widths for each tire size. 
• Check tire specifications: Tire manufacturers list the minimum and maximum compatible rim widths on their websites for a specific tire model. 
• Match the tire width to the rim width: The correct tire width is crucial for performance and safety. For example, a tire with a 12.5" tread width can be fitted on a 9.0" wide wheel, and a tire with a 9.9" tread width would have an ideal wheel width of 10.0". 

This video shows how to measure your wheels for aftermarket fitment: 46sFitment IndustriesYouTube · Feb 13, 2020
Important considerations

• Don't guess: Using improperly fitted tires can lead to a speedometer being off, reduced performance, and a decline in the overall driving experience. 
• Match diameter exactly: The tire's diameter must be an exact match for the rim's diameter. 
• Consider tire type: Some non-numerical values on the tire, such as 'R' for radial, indicate the tire's construction and are important for fitment. 

This video explains what to consider when choosing a tire for your wheels: 59sKONIG WHEELS USAYouTube · May 12, 2023