How To Measure A Tire For A Spare Tire Cover
Question:
How do I measure the tire to find out what size cover I need your list does not give my tire size
asked by: John
Expert Reply:
To find the size of your tire, the easiest way is to just measure the distance from the ground to the top of the tire.
I have attached a couple help articles that explain tire sizing. The first 3 numbers are the Section Width. For example, if the number is 175 it means 175 millimeters wide. If it is listed as 4.80 that means the tire is 4.80 inches wide.
The two digits following the Section Width is the Aspect Ratio. If that number is 80 you would take 80 percent of the Section Width. On a tire that is ST175/80-R16, you would take 80 percent of the 175, which would be 140 millimeters. To convert to inches multiply 140 x .0394. The section height would be 5.526 inches.
The last 2 numbers is the diameter of the wheel the tire would be mounted on. If it is 16, then the wheel is 16 inches diameter.
So, for a tire that is labeled ST175/80-R16, you would multiply the Aspect Ratio of 5.526 x 2, which would be 11.052. Add that to the 16 inch wheel diameter and your height would be 27.052. for a tire this size you could use a cover like part # 052963751307, which fits tires from 26-1/2 to 27-1/2 inches.
Products Referenced in This Question
Classic Accessories Spare Tire Cover for 26-1/2" to 27-1/2" Diameter Tires - White - Qty 1
- Spare Tire Covers
- 27 Inch
- Vinyl
- White
- Classic Accessories
more information >
Product Page this Question was Asked From
Classic Accessories RV Tire Covers for 24" to 27" Tires - Single Axle - White - Qty 2
- RV and Trailer Tire Covers
- Single Axle
- 24 Inch Tires
- 25 Inch Tires
- 26 Inch Tires
- 27 Inch Tires
- Vinyl
- 2 Covers
- White
- Classic Accessories
more information >
Continue Researching
- Search Results: c3214
- Shop: Pro Series Square Jack - Drop Leg w/ Non-Spring Return - Sidewind - 26" Lift - 10,000 lbs
- Shop: Ceiling Garnish for MaxxAir MaxxFan RV Roof Vent - White
- Shop: RV Roof Membrane
- Shop: Dexter Electric Trailer Brake Assembly - 10" - Left Hand - 3,000 lbs
- Shop: Dexter Electric Trailer Brake Assembly - 10" - Right Hand - 3,000 lbs
- Search Results: rubber roof
- Shop: Alpha Systems Superflex TPO RV Roof Membrane - White - 45' x 9-1/2'
- Shop: Alpha Systems Superflex TPO RV Roof Membrane - Beige - 45' x 9-1/2'
- Search Results: rv soft start
- Shop: Wheel Cover
- Shop: Adco Tyre Gard RV Tire Covers for 18" to 22" Tires - Single Axle - Diamond Plate - Qty 2
- Search Results: 3312022.000
- Shop: RV Interior Lighting
- Search Results: winch cable
- Search Results: 13 inch trailer wheel covers
- Search Results: 4.80x8 tire cover
- Q&A: Replacement Undermount Sink To Fit A 25-3/4 x 14-3/4 Opening
- Q&A: How to Determine the Right Size Spare Tire Cover
- Shop: Trailer Hitch
- Shop: Brake Controller
- Article: Trailer Wiring Diagrams
- Q&A: 10k Dexter Replacement Hub for a 8-415
- Video: Choosing the Right Trailer Wiring
- Shop: Trailer Wiring
- Q&A: 2022 Toyota Highlander Wiring for a 7-Way Blade Connector
- Article: How to Choose the Right Trailer Hitch Class
- Video: Roadmaster Automatic Battery Disconnect Installation - 2020 GMC Sierra 1500
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Suspension Enhancement