![]() Size 225/75R15 tires can also be used as fifth wheels a fifth wheel is wheel number 5 which is attached using a “jaw hitch” 2. Special trailer tires are designed to carry the extra weight of boats or the weight on travel and utility trailers. ![]() You will want to choose tire type ST, which stands for “special trailer”. When it comes to tires size 225/75R15 you have a few options. Differing tread styles are used to grip the road in different ways and under different terrains and weather circumstances (i.e. Something unique you’ll want to consider is the tire’s “fingerprint” or tread style. of Muzi Ford in Needham, Massachusetts says “it’s important to rotate tires at least every 10k miles for optimal life expectancy”. A tire with this tread depth should get you 30 to 60k miles depending on how you treat it (what type of terrain you drive it on) and routine maintenance (proper inflation, frequent rotation). Starting tread on a new tire is between 10-12/32nds of an inch… a strange measurement in and of itself. Step 3 in choosing a tire for your trailer requires making a decision about the tire’s “fingerprint” or tread pattern.Ī tire’s tread pattern can be looked at like a fingerprint they are mostly unique by tire make and model. Load range B tires can hold weight at up to 35psi and range all the way up to load range E, which can hold weight at up to 80psi. Load ranges are categorized by letters and span from B, C, and D to E. The load range tells you how much weight a tire is designed to hold at the manufacturer’s recommended psi. ![]() Next, you’ll want to consider the load range of the tire. Because no steering is controlled with a trailer tire, a thin tread pattern is sufficient. You’ll also need to steer with a passenger tire, so a thicker tread pattern is ideal. With a passenger tire, you’ll need to choose a thicker tread pattern as the tire is used to transfer power to the road through acceleration and braking. A thin tread is ideal for trailer tires because trailer tires are used for towing. Step one in choosing a trailer tire first, and foremost you will need to consider the tread thickness. Passenger tires have a thin sidewall and trailer tires, for obvious reasons have a thicker sidewall. The next difference is the structural integrity of the tire. Passenger vehicles generally use a thickly treaded tire whereas a trailer tire will have a thinner tread width. The next difference is the tread thickness and style. ![]() says “I see way too many people using passenger tires where a specialty tire should be used friendly reminder, passenger tires are NOT designed to take the higher psi that the specialty tires can accommodate… and I can’t stress this enough!”. Chrysler Service Dispatcher in Norwood, Massachusetts Lisa D. Trailer tires are designed to carry heavier weights and can hold a psi of up to 80. Number one is passenger tires are designed to carry a limited weight and generally hold an average psi (pounds per square inch) of 35. A passenger tire differs from a trailer tire in a few ways. It’s important to note that the two can not be used interchangeably. But first, let’s talk about the difference between a passenger tire and a trailer tire. When choosing a trailer tire you will need to take into consideration a few specifications. With over 100 models of trailer tires on the market, you’ll need to narrow it down to the best fit for your trailer, budget, and possibly reputation.įigure 1: Source 1 How to Choose the Best Trailer Tires for 225/75R15 Finally, the third number (in this case R15) is the rim or wheel size in inches. The aspect ratio is a percentage that is determined by dividing sidewall height (from the rim to the top of the tire tread) by tire width1. The second number (in this case 75) is the aspect ratio. The larger the vehicle, the larger the width is generally a safe rule of thumb. ![]() The first number (in this case, 225) is the width of the tire. Trailer tires come in metric or euro-metric sizes, which means they are measured in millimeters. For starters, let’s establish what the numbers in a tire size mean. ![]()
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