Tire Size | Diameter | Rim (H x W) |
205/55R18 | 26.9″ (+3%) | 18″ x 5.5-7.5″ |
225/50R18 | 26.9″ (+3%) | 18″ x 6.0-8.0″ |
285/35R19 | 26.9″ (+3%) | 19″ x 9.5-11.0″ |
335/30R19 | 26.9″ (+3%) | 19″ x 11.5-12.5″ |
145/60R20 | 26.9″ (+3%) | 20″ x n/a |
375/20R21 | 26.9″ (+3%) | 21″ x n/a |
155/80R17 | 26.8″ (+2.6%) | 17″ x n/a |
245/35R20 | 26.8″ (+2.6%) | 20″ x 8.0-9.5″ |
345/25R20 | 26.8″ (+2.6%) | 20″ x 12.0-13.0″ |
245/30R21 | 26.8″ (+2.6%) | 21″ x 8.0-9.0″ |
295/25R21 | 26.8″ (+2.6%) | 21″ x 10.0-11.0″ |
205/60R17 | 26.7″ (+2.2%) | 17″ x 5.5-7.5″ |
225/55R17 | 26.7″ (+2.2%) | 17″ x 6.0-8.0″ |
245/45R18 | 26.7″ (+2.2%) | 18″ x 7.5-9.0″ |
275/40R18 | 26.7″ (+2.2%) | 18″ x 9.0-11.0″ |
315/35R18 | 26.7″ (+2.2%) | 18″ x 10.5-12.5″ |
245/40R19 | 26.7″ (+2.2%) | 19″ x 8.0-9.5″ |
325/30R19 | 26.7″ (+2.2%) | 19″ x 11.0-12.0″ |
285/30R20 | 26.7″ (+2.2%) | 20″ x 9.5-10.5″ |
135/90R17 | 26.6″ (+1.9%) | 17″ x n/a |
245/50R17 | 26.6″ (+1.9%) | 17″ x 7.0-8.5″ |
275/35R19 | 26.6″ (+1.9%) | 19″ x 9.0-11.0″ |
335/25R20 | 26.6″ (+1.9%) | 20″ x 11.5-12.5″ |
235/30R21 | 26.6″ (+1.9%) | 21″ x n/a |
135/80R18 | 26.5″ (+1.5%) | 18″ x n/a |
155/70R18 | 26.5″ (+1.5%) | 18″ x n/a |
215/50R18 | 26.5″ (+1.5%) | 18″ x 6.0-7.5″ |
235/35R20 | 26.5″ (+1.5%) | 20″ x 8.0-9.5″ |
275/30R20 | 26.5″ (+1.5%) | 20″ x 9.0-10.0″ |
305/35R18 | 26.4″ (+1.1%) | 18″ x 10.0-12.0″ |
135/70R19 | 26.4″ (+1.1%) | 19″ x n/a |
235/40R19 | 26.4″ (+1.1%) | 19″ x 8.0-9.5″ |
315/30R19 | 26.4″ (+1.1%) | 19″ x 10.5-11.5″ |
325/25R20 | 26.4″ (+1.1%) | 20″ x 11.5-12.5″ |
275/25R21 | 26.4″ (+1.1%) | 21″ x 10.0″ |
215/55R17 | 26.3″ (+0.8%) | 17″ x 6.0-7.5″ |
235/50R17 | 26.3″ (+0.8%) | 17″ x 6.5-8.5″ |
295/40R17 | 26.3″ (+0.8%) | 17″ x 10.0-11.5″ |
235/45R18 | 26.3″ (+0.8%) | 18″ x 7.5-9.0″ |
265/40R18 | 26.3″ (+0.8%) | 18″ x 9.0-10.5″ |
265/35R19 | 26.3″ (+0.8%) | 19″ x 9.0-10.5″ |
265/30R20 | 26.3″ (+0.8%) | 20″ x 9.0-10.0″ |
335/35R17 | 26.2″ (+0.4%) | 17″ x 11.0-13.0″ |
305/30R19 | 26.2″ (+0.4%) | 19″ x 10.5-11.5″ |
225/35R20 | 26.2″ (+0.4%) | 20″ x 7.5-9.0″ |
315/25R20 | 26.2″ (+0.4%) | 20″ x 11.0-12.0″ |
145/80R17 | 26.1″ (Equal) | 17″ x n/a |
165/70R17 | 26.1″ (Equal) | 17″ x n/a |
295/35R18 | 26.1″ (Equal) | 18″ x 10.0-11.5″ |
345/30R18 | 26.1″ (Equal) | 18″ x 12.0-14.0″ |
225/40R19 | 26.1″ (Equal) | 19″ x 7.5-9.0″ |
255/45R17 | 26″ (-0.4%) | 17″ x 8.0-9.5″ |
285/40R17 | 26″ (-0.4%) | 17″ x 9.5-11.0″ |
145/70R18 | 26″ (-0.4%) | 18″ x n/a |
185/55R18 | 26″ (-0.4%) | 18″ x n/a |
225/45R18 | 26″ (-0.4%) | 18″ x 7.0-8.5″ |
255/40R18 | 26″ (-0.4%) | 18″ x 8.5-10.0″ |
255/35R19 | 26″ (-0.4%) | 19″ x 8.5-10.0″ |
295/30R19 | 26″ (-0.4%) | 19″ x 10.0-11.0″ |
355/25R19 | 26″ (-0.4%) | 19″ x 12.5-13.5″ |
255/30R20 | 26″ (-0.4%) | 20″ x 8.5-9.5″ |
305/25R20 | 26″ (-0.4%) | 20″ x 10.5-11.5″ |
205/55R17 | 25.9″ (-0.8%) | 17″ x 5.5-7.5″ |
225/50R17 | 25.9″ (-0.8%) | 17″ x 6.0-8.0″ |
285/35R18 | 25.9″ (-0.8%) | 18″ x 9.5-11.0″ |
335/30R18 | 25.9″ (-0.8%) | 18″ x 11.5-12.5″ |
125/70R19 | 25.9″ (-0.8%) | 19″ x n/a |
215/40R19 | 25.8″ (-1.2%) | 19″ x n/a |
245/35R19 | 25.8″ (-1.2%) | 19″ x 8.0-9.5″ |
245/30R20 | 25.8″ (-1.2%) | 20″ x 8.0-9.0″ |
295/25R20 | 25.8″ (-1.2%) | 20″ x 10.0-11.0″ |
185/60R17 | 25.7″ (-1.6%) | 17″ x n/a |
245/45R17 | 25.7″ (-1.6%) | 17″ x 7.5-9.0″ |
275/40R17 | 25.7″ (-1.6%) | 17″ x 9.0-11.0″ |
315/35R17 | 25.7″ (-1.6%) | 17″ x 10.5-12.5″ |
245/40R18 | 25.7″ (-1.6%) | 18″ x 8.0-9.5″ |
285/30R19 | 25.7″ (-1.6%) | 19″ x 9.5-10.5″ |
115/95R17 | 25.6″ (-2%) | 17″ x n/a |
215/45R18 | 25.6″ (-2%) | 18″ x 7.0-8.0″ |
275/35R18 | 25.6″ (-2%) | 18″ x 9.0-11.0″ |
335/25R19 | 25.6″ (-2%) | 19″ x 11.5-12.5″ |
235/30R20 | 25.6″ (-2%) | 20″ x 8.5″ |
285/25R20 | 25.6″ (-2%) | 20″ x 10.5″ |
135/80R17 | 25.5″ (-2.4%) | 17″ x n/a |
155/70R17 | 25.5″ (-2.4%) | 17″ x n/a |
215/50R17 | 25.5″ (-2.4%) | 17″ x 6.0-7.5″ |
235/35R19 | 25.5″ (-2.4%) | 19″ x 8.0-9.5″ |
275/30R19 | 25.5″ (-2.4%) | 19″ x 9.0-10.0″ |
195/55R17 | 25.4″ (-2.8%) | 17″ x 5.5-7.0″ |
305/35R17 | 25.4″ (-2.8%) | 17″ x n/a |
135/70R18 | 25.4″ (-2.8%) | 18″ x n/a |
145/65R18 | 25.4″ (-2.8%) | 18″ x n/a |
235/40R18 | 25.4″ (-2.8%) | 18″ x 8.0-9.5″ |
315/30R18 | 25.4″ (-2.8%) | 18″ x 10.5-11.5″ |
135/60R19 | 25.4″ (-2.8%) | 19″ x n/a |
275/25R20 | 25.4″ (-2.8%) | 20″ x 10.0″ |
205/50R18 In Inches – Tire Size & Rim Fitment Guide
What tire size is 205/50R18 in Inches?
The 205/50R18 tire has an overall diameter of 26.1 inches, a section width of 8.1 inches, and can be mounted on 18 inches height of rim. The equivalent tire size in the high flotation system is 26.1x8.1R18.
Inches | Millimeters | |
Tire Diameter | 26.1 | 662.2 |
Section Width | 8.1 | 205 |
Rim Height | 18 | 457 |
Sidewall Height | 4 | 102.5 |
Circumference | 81.9 | 2080.4 |
To make it clear, we'll break down each part of the 205/50R18 tire size to know what these numbers represent & how they may affect your tire's performance:
How big is a 205/50R18 tire?
A 205/50R18 tire has a height of 26.1 inches (662.2 mm). This is the measurement from the bottom to the highest point at the top of a tire through its exact center when inflated and unloaded.
How wide is a 205/50R18 tire?
The 205/50R18 tire has a width of 8.1 inches (205 mm). This is the measurement at its thickest point, the distance between the outer sidewall and the inner sidewall’s widest point, also called as tread width or section width.
You can put a slightly narrower or wider tire on a rim as long as it falls within the manufacturer's recommended tire width range.
205/50R18 sidewall height
The 205/50R18 has a sidewall height of 4 inches (102.5 mm). It’s measured from the rim to the outer edge of the tire's tread, expressed as a percentage of tire width.
What size rim do I need for 205/50R18 tire?
You can mount the 205/50R18 tire on a rim with a height of 18 inches.
Putting very narrow tires on wide rims or vice versa can result in reduced performance of the tire.
205/50R18 circumference
The 205/50R18 tire has a circumference of 81.9 inches (2080.4 mm), This is the measurement of the distance the tire travels in one revolution.
The tire circumference is important for your vehicle's overall performance, affecting its speedometer acceleration, accuracy and fuel efficiency.
205/50R18 Revolutions
The 205/50R18 performs 773.6 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.
Compatible Tire Sizes for 205/50R18
As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. However, it should be considered as a general guideline, not a hard and fast rule. Here is a list of compatible tire sizes for 205/50R18:
More tire sizes for 18" Wheel:
25″ Tire Diameter
- 135/70R18 = 25.5x5.3R18
- 145/65R18 = 25.4x5.7R18
- 155/60R18 = 25.3x6.1R18
- 205/45R18 = 25.2x8.1R18
- 215/45R18 = 25.6x8.5R18
- 225/40R18 = 25.1x8.9R18
- 235/40R18 = 25.4x9.3R18
- 245/40R18 = 25.7x9.6R18
- 255/35R18 = 25x10R18
- 265/35R18 = 25.3x10.4R18
- 275/35R18 = 25.6x10.8R18
- 285/35R18 = 25.9x11.2R18
- 295/30R18 = 25x11.6R18
- 305/30R18 = 25.2x12R18
- 315/30R18 = 25.5x12.4R18
- 335/30R18 = 25.9x13.2R18
26″ Tire Diameter
- 135/80R18 = 26.5x5.3R18
- 145/70R18 = 26x5.7R18
- 155/70R18 = 26.6x6.1R18
- 185/55R18 = 26x7.3R18
- 205/50R18 = 26.1x8.1R18
- 205/55R18 = 26.9x8.1R18
- 215/50R18 = 26.5x8.5R18
- 225/45R18 = 25.9x8.9R18
- 225/50R18 = 26.9x8.9R18
- 235/45R18 = 26.3x9.3R18
- 245/45R18 = 26.7x9.6R18
- 255/40R18 = 26x10R18
- 275/40R18 = 26.7x10.8R18
- 295/35R18 = 26.1x11.6R18
- 305/35R18 = 26.4x12R18
- 315/35R18 = 26.7x12.4R18
- 345/30R18 = 26.2x13.6R18
27″ Tire Diameter
- 145/80R18 = 27.1x5.7R18
- 145/85R18 = 27.7x5.7R18
- 155/80R18 = 27.8x6.1R18
- 165/70R18 = 27.1x6.5R18
- 205/60R18 = 27.7x8.1R18
- 215/55R18 = 27.3x8.5R18
- 225/55R18 = 27.8x8.9R18
- 235/50R18 = 27.3x9.3R18
- 245/50R18 = 27.7x9.6R18
- 255/45R18 = 27x10R18
- 265/45R18 = 27.4x10.4R18
- 275/45R18 = 27.8x10.8R18
- 285/40R18 = 27x11.2R18
- 295/40R18 = 27.3x11.6R18
- 305/40R18 = 27.6x12R18
- 315/40R18 = 27.9x12.4R18
- 325/35R18 = 27x12.8R18
- 335/35R18 = 27.2x13.2R18
- 345/35R18 = 27.5x13.6R18
38″ Tire Diameter
- 395/65R18 = 38.2x15.6R18
*Disclaimer: Please note that our tire dimensions & measurements are an approximation number, while the tire manufacturers may have different ways in calculating or rounding numbers. We recommend referring to the vehicle manufacturer's manual or checking with the tire technician to find out the correct tire size for your vehicle.