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Leader Accessories Heavy Duty Vinyle Spare Tire Cover for $12.99 + Free Shipping @ Amazon.com

gtmaster303 2,306 1,065 August 19, 2015 at 08:09 AM in Autos (6) More Amazon Deals
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Got some extra wheels and tires for my car in prep for winter, so I needed some tire covers to store my spare set. Enjoy guys

Leader Accessories Heavy Duty Vinyle Spare Tire Cover for $12.99 + Free Shipping @ Amazon.com
http://www.amazon.com/dp/B010UDKI4Y

Code: O9KGD33G

Description:
Universal fits
Ideal for Seasonal use for the Summer or Winter times
Easy installation with elastic hem for adjustment
Heavy duty and Waterproof protection
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5 Comments

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#2
Sorry, don't get the diameter size. If my RV has 14" tires, what size would I need?
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#3
Quote from karrun View Post :
Sorry, don't get the diameter size. If my RV has 14" tires, what size would I need?
Surprisingly, the best summary I could find was from Pep Boys...

http://www.pepboys.com/tires/trea..._diameter/
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#4
Quote from karrun View Post :
Sorry, don't get the diameter size. If my RV has 14" tires, what size would I need?
You'll need to look at the tire information.

Let's say, for example, the tires are marked as 235/40R18.

The 18" refers to the size of the wheel, which in your case, would be 14" wide.

The "235" is the tread width, in millimeters. This is the width of the area that contacts the road. You can divide by 25.4 mm/inch to get the imperial units (inches, feet, etc).

The "40" refers to a percentage of that width that makes up the sidewall, or the vertical wall between the rim of the wheel and horizontal treads. You'll figure this out as follows (235 x 40% = 94mm), and add it to each side of the rim size.

In this case (2 x 94mm = 188mm = 7.40") 7.40" is added to 18" wheel size, and becomes 25.40" total width, which falls just about on the 25.5-26.5" size.

Hopefully this helps, I'm sure I overexplained it, but I'm an engineer. It's what we do. Smilie
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#5
Quote from Crew View Post :
You'll need to look at the tire information.

Let's say, for example, the tires are marked as 235/40R18.

The 18" refers to the size of the wheel, which in your case, would be 14" wide.

The "235" is the tread width, in millimeters. This is the width of the area that contacts the road. You can divide by 25.4 mm/inch to get the imperial units (inches, feet, etc).

The "40" refers to a percentage of that width that makes up the sidewall, or the vertical wall between the rim of the wheel and horizontal treads. You'll figure this out as follows (235 x 40% = 94mm), and add it to each side of the rim size.

In this case (2 x 94mm = 188mm = 7.40") 7.40" is added to 18" wheel size, and becomes 25.40" total width, which falls just about on the 25.5-26.5" size.

Hopefully this helps, I'm sure I overexplained it, but I'm an engineer. It's what we do. Smilie

Thanks for taking the tme to reply. Or.... I could get a tape measure and measure the diameter, lol.
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#6
Quote from karrun View Post :
Thanks for taking the tme to reply. Or.... I could get a tape measure and measure the diameter, lol.
That too, lol.

The calculation comes in handy when determining appropriate tire size for a smaller or larger diameter wheel, as well.

I ended up memorizing it when searching for smaller wheels with thicker winter tires, while maintaining the same rolling diameter (AWD). Best of luck.
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