Comparing 175/80-13 And 185/80-13 Tires

Question

Question:

175 80r13D vs 185 80r13D trailer tires I would like to know if the tire size difference will affect tracking straight, more bounce or less bounce on the trailer? Will the height and the width difference made for better tracking or less? If running at less than weight capacity for example a lighter load should I run the tire pressure lower?I forgot to ask which one is likely to have less wobble at higher speeds. I am assuming it is the 175/80R13D. Due to the tire is not as tall. Do these tires have a speed rating, as they are not car tires but trailer tires. Some states have speed limits that are 80 miles an hour and some have speed limits of 55. Whoud a D load have less wobble and then a C load tire?

asked by: Jamie

0

Expert Reply:

The size difference between the Kenda Karrier ST175/80R13 Radial Trailer Tire - Load Range D # AM10210 and a 185-80R13 tire is the diameter and the width. We don't have any radials in that size, so I'll compare to the similar Kenda Loadstar ST185/80D13 Bias Trailer Tire - Load Range D # AM1ST79. The 175/80-13 tires have a diameter of 24.1 inches and a width of 7 inches compared to the slightly larger 185/80-13 tires that have a diameter of 24.4 inches and a width of 7.2 inches.

The speed rating is based on the specific tire, not the size. The larger # AM1ST79 is rated M for 81 mph. The # AM10210 was recently adjusted to meet the 81 mph speed rating. In this case a bias tire is rated for higher speed but even with the Load Range D being the same category, the bias tire has a load capacity of 1,710 lbs at 65 psi compared to the radial at 1,610 lbs at 65 psi. You won't have tire wobble based on load capacity most of the time, but rather based on speed capacity and weather conditions. Bounce would be affected by load capacity as loaded a highter capacity tire may have better traction when loaded, but unloaded could have more bounce.

For your specific size of tire, I recommend the # AM10210 radial tire of the same size or the slightly smaller size of 175/80-13. I know it isn't the comparison you asked for with two radial tires, because I don't have the one size to judge from but in most cases the radial tire will win out because it can disperse weight better so it has less heat at highway speeds.

You should always run your tires at max psi weather loaded or unloaded for safety. Less tire pressure will cause a safety issue by reducing traction and increasing possiblity of blow out.

expert reply by: Jason S

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Answer 1

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Answer 2

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Answer 3

I have another option but the smallest 13 inch tire that we offer is a 175/80/13 like the Kenda Karrier #AM10210. The only option to get a smaller tire would be to go to a 12 inch tire like the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire -…

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Answer 4

A 5.30 X 12C tire is going to be your best replacement. If you need the 4 on 4 inch bolt pattern #AM30780 is a good option, or #AM30820 for the 5 on 4-1/2 inch bolt pattern. These both have the wheel and tire included, which you'll need, since…

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Answer 5

The best option we have that will fit your wheel and work well is the Lionshead tire part #LHWL101. The quality and construction of this tire is unmatched but I really like about it is the fact it has a 75 mph speed rating which is higher than most…

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Answer 6

The 185/80-13 trailer tire size and the 175/80-13 both fit the exact same rim sizes so yes you could go down to the 175 size like the part #TTWTRTM1758013C which is a radial with a higher speed rating of 81 mph.

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Answer 7

In terms of speed rating the Goodyear Endurance ST205/75R14 Radial Trailer Tire is certainly superior to the Kenda Karrier #AM10235, as it features an 87 mph maximum speed (compared to 81 mph on the Kenda). Based on your question, where it seems like…

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Answer 8

Kenda trailer tires are primarily made in China like most trailer tires. The only Radial trailer tires that I'm aware of that are made in the United States are the Goodyear Endurance line. Carlisle has a bias ply line of tires made in the States,…

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Answer 9

Are you sure about the 165/80-13 tire size? I don't show that as a currently available tire size, could you have meant a 185/80-13? In any event, a 175/80-13 tire measures 24 inches tall x 6.9 inches wide which would be slightly shorter at about…

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Answer 10

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Answer 11

You will more than likely be just fine replacing your 175/80R13 tires on your boat trailer with ST185/80R13 tires like the Kenda Karrier ST185/80R13 Radial Trailer Tire - Load Range D #AM10208 due to them being so close in size. The ST185/80R13 will…

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Answer 12

As long as you have the needed wheel well and trailer frame clearance, there is no reason that you couldn't go to a larger tire size from your existing 5.30-12 tires. The next size up from what you have is going to be with an ST175/80-13 size…

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Comparing 175/80-13 And 185/80-13 Tires

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