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Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant white powder coat finish. Beveled stud holes keep wheel secure.
Features:
Specs:
This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.
Unlike standard trailer tire tread, which has solid, continuous ribs, the automotive-grade, computer-generated tread on these Karrier S-Trail radials has ribs with breaks. These breaks allow water to run off to the sides. The Karrier S-Trail tread also has sipes. Siping is a process in which thin grooves (or sipes) are cut into the rubber of the tire. The grooves channel water away from the tread so that the tire makes better contact with the road. Both of these features greatly improve traction during wet, snowy, or icy conditions.
Karrier S-Trail radials are constructed with double steel belts and full nylon plies for increased durability and endurance. The premium rubber compound materials of this tire help disperse heat.
The stud holes on this steel wheel are beveled to ensure that the wheel stays tight against your trailer hub. This also eliminates the need to constantly retorque the lug nuts.
Radial ply tires are designed for trailers that are towed on the highway. The cords on a radial tire are positioned at a 90-degree angle to the direction of travel so that they lay across the width of the tire from wheel lip to wheel lip. This construction prevents the cords from rubbing against one another when the tire flexes, unlike the cords on a bias ply tire. As a result, radial tires have less rolling resistance and heat buildup, which leads to a longer tread life and improved steering at higher speeds.
Determining the Bolt Pattern
The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.
To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)
On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)
Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.
Average Customer Rating: 4.9 out of 5 stars (2624 Customer Reviews)
Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant white powder coat finish. Beveled stud holes keep wheel secure.Arrived as scheduled. Upgraded retrofitted jetski (kayak) trailers bias tires to these radials. Bearings and tires were the first items to check off tight lines all.
I have them on a trailer that I use for multiple activities. Not too much weight on it. I use it about every other week from spring through fall. My only issue is that they do not have a speed rating.
Brooke M - 08/02/2021GREAT CUSTOMER SERVICE!!! Thank you Matt! Matt helped us find the right product. We ordered this spare tire along with the CE Smith spare tire carrier for our pontoon yacht club trailer. Great quality spare tire. Also, the items we have ordered are shipped and received quickly!
I purchased these tires hoping they would perform well under tough situations like long hauls and gravely terrain launch sites. These radials are wearing three times better than previous 10 ply rated bias tires. Excellent product and am well pleased with my purchase. Again thank you .
Fair F - 11/18/2020Since I live in a medium size city I use the internet a lot to order goods. Recently I concluded I needed new tires for my 1995 boat trailer I use for my Aluma Craft boat. However popular tire sizes have changed substantially since 1995. I had problems finding the right size for my trailer. Plus I wanted to order rims with the tires so I could install them myself. Fortunately I found etrailer.com which had the right size available at a very reasonable price. I ordered and had my rims and tires within a few days. They are in excellent condition and have been installed. What a pleasant ordering experience. I give etrailer.com an A+ for service, availability, and price!
So far, my wife and I have made 3 trips to Houston, TX from Illinois with the Kenda Karrier tires placed on a camper trailer, this past year. I purchased 2 tires that were delivered free to my home. etrailer was very helpful in selecting the perfect tire mounted on a wheel for my application. Thanks etrailer
Very good customer service. We ordered the wrong tires for our Camper online. I called but the orginal order had already shipped. They were able to get the right tires out and we received both orders the very next day. Took the wrong tires to UPS and shipped them back to them. We were going camping on Friday so having the quick turn around was fantastic. We ordered them on Wednday, received them on Thursday, put them on the camper so we were ready to go on Friday. Great job! We were frantic trieing to find the right tires for out camper and they came through with flying colors. I have told everyone I know that has a trailer or camper about the extra ordinary service.
I was looking for 12" radial wheels and rims for a small trailer. The bias ply tires get hot on the hwy and I did not want to risk a problem. Plus I wanted a spare. I ordered a pair of tires. The online order process is simple and smooth. The shipping was free(I hit a promotion) and the order arrived in 3 days. Very cool. However the box was open when it arrived. This may have occurred from the packaging(simple heavy staples) or it could possibly been opened by driver. Either way I dropped a star. The tires are undameged. I cannot comment on the quality of the product as I have just recieved it.
Had the tires arrived filled to the correct air pressure it would have been helpful. Otherwise, excellent in every way. Thank you.
Great service. Quick. Excellent tires. Only place I could get 12 inch radial tire and wheel. Looks good as well. Thank you
Nice looking wheels and tires also will see how they hold up on the pop up camper
Easy order, super-quick shipping...only issue was that one of the tires was inflated to OVER 100 PSI; rated for 65 psi.
This wheel assembly arrived one week after I ordered it, which included a 3 day holiday weekend. It came in a sturdy box and was in excellent, new condition. I will not hesitate to order from etrailer again.
These work great on a 5X8 open trailer. They are quiet and wear much better than bias ply tires.
Bruce M - 04/01/20213+ stars for the Product, 5 for etrailer = 4+ Average. As you probably already know, etrailer is a bastion of information about trailer questions and problems. My original 20.5 x 8 - 10s were always too wide for my 1995 Fleetwood Utah pop-up camper, requiring a crowbar to wedge them back into place between the frame and the 7" electric brake hub. In one section on the etrailer website I found someone who had the same problem, and these wheels were recommended (being narrower by about 2.5"), so I ordered three (one for a spare) after measuring my camper carefully. The wheels arrived promptly. Two had some slight wobble to both the rim and tire (runout), but the third was really bad. (I replaced and checked one of my originals - it also had some slight runout; I guess trailer wheels are not perfect?) I called etrailer customer service to explain my dissatisfaction with the one wheel. The rep (who is evidently learning the trade) was not familiar with the term "runout", and twice had to put me on hold to confer with the techs. When I was told I would be called sometime later in the week by a tech, I was worried, anticipating a long drawn-out return process. However, I was very surprised when I was called by the same rep early the next morning and was told that a new wheel was being shipped to me immediately (even before I shipped my wobbler back), along with a printable call tag via email to ship the wobbler back - all for free! That's customer service! The new one also arrived promptly - it has runout about the same as the other two, so I kept it. Lessons here: research on etrailer to solve your problems; mount your wheels carefully and check them for runout before you tow your rig an inch; use a reputable company like etrailer, so if you have a problem, you have some recourse.
tealbingy - 10/23/2018The 2 Kenda Karrier S-trail ST145/R12 Radial Tire w/12" White Spoke Wheel - 5 0n 4-1/2 - LR -D (AM31199DX) tire/wheels were purchased to replace 2 old & worn 6.00-12 tire/wheels on a used boat trailer recently purchased off craigslist. The 2 new tire/wheels were shipped free and arrived within two days of ordering. They were fully inflated and fit the boat trailer perfectly. The new tire/wheels were reasonably priced and the cost free shipping and followup postal tracking and delivery confirmation suggest a very well administered customer service system. Well Done!
Dave C - 09/16/2018I needed to replace my old trailer tires. I wanted tires and rims. I am very pleased I found this item. This has a slightly higher profile than my former tires that were also 12". I had the room in my wheel well. Not problems installing.
Works as advertised.
These were a perfect upgrade to my 20 year old dual jetski trailer.
Thanks for the great service! The evidently hard to find ST145R12 D tires are on my pop Up. Rims were superior to what I was replacing and what I expected. I'm looking forward to trying out the tires very soon.
Speedy delivery, sturdy packaging, very good website/shopping experience! Highly recommended!
I have put over 12,000 miles on these tire and wheels on our camper trailer. Drove on good highways gravel highways and construction highway with lots of bumps. These tire and wheels are great. They have held up better than other brands I have tried.
I was tired of replacing Bias tires on my boat trailer every 2 years. I decided to go with Radials and they made all the difference. After 1 year of use and no signs of wear i am sure i will get more than 2 years out of these tires. Also pulling my trailer with the new tires is a big difference. Trailer tracks truer , less jumping on uneven roads and easier to back. etrailer great place to get your trailer tires.
Very impressed with the online ordering process of etrailer.com. The shipping (free over $99) stated 3-5 days ground shipping, however my two (2) trailer tires were at my door by noon the 3rd day after placing the order. Also, the online FAQ section was super helpful. Originally looking for 5.30-12 tire in Radial due to I trailer my marsh boat often. Thru Q&A section of the website, I discovered the ST145/R12 radial tire was comparable and a better option than 5.30-12 bias tires for my needs. They fit great! Looking forward to buy all my trailer tires thru etrailer.com in the future. Thanks again.
Found the tires/wheels I wanted in the load range I needed. My local garage couldn't find them.
Fred - 04/10/2019Do you have a question about this Trailer Tires and Wheel?
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