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When you’re towing serious weight, the Karrier ST225/75R15 Radial Trailer Tire is built for it. Rated Load Range E with a 10-ply rating, it carries up to 2,860 lbs at 80 psi. The “M” speed rating means it can safely handle 81 mph, giving you confidence for long hauls or heat-soaked highway runs. It meets Department of Transportation specs and stays stable even under full load.
This isn’t an old-school bias tire—it’s a true radial built for highway manners and long life. The cords are positioned at 90° to the direction of travel, so they flex smoothly without rubbing, reducing rolling resistance and heat buildup. Double steel belts and full nylon plies reinforce the structure for excellent traction, long tread life, and steady tracking at speed.
Wet road or blazing pavement, the Karrier’s computer-generated tread design and premium rubber compound hold traction and resist heat. The steel-belted radial carcass sheds heat efficiently and stays cooler on long drives. That means less risk of blowouts and more consistent performance trip after trip—exactly what you want when your trailer is loaded down.
Every Karrier ST225/75R15 comes with a 5-year limited warranty plus a 1-year worry-free guarantee that replaces the tire at no charge if it’s damaged within the first 12 months. It’s solid peace of mind for anyone who puts serious miles on their trailer and expects their tires to keep up without complaint.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
After one year in service, I'm very pleased with the new wheels and tires I purchased from etrailer for my restored 1972 Airstream. The customer service was excellent, and the shipping prompt.
Thank you.
seems like a good tire, good price, high load rating and fast shipping , but I wont really know till the tire is used for a while
I needed a tire for a spare and a co-worker told me about your company. Lots of choices and with free shipping, couldn’t go wrong ordering from you. Priced competitively, arrived boxed(!), nice and clean. Will definitely use the company again for any trailer related items needed in the future.
Malcolm
9/2/2020
Thankfully, it’s a spare and haven’t had to use it! Holding air and looks as new with no miles.
I purchased these tires a year ago and have used them to cross the country… Thousands of miles and they are looking great. I knew what kind of tire I wanted from the get-go and I’m glad I went with Karrier.
Best transaction I’ve had online. They had the tires I needed in stock and received them in less than three days. This is my second order from Etrailer.com and will not be the last.. The tires came in individual boxes and were Not damaged at all. I highly recommend doing business with this company.
Terry M.
5/22/2021
The tires are doing great on my travel trailer, in two weeks we will be taking it out for another 2000 mile trip, Great tires!!
A great tire for your trailer!
good tires have on heavy toy hauler when we changed form original tires to these you could feel the lessened rolling resistance , trailer moved much easier. Have gone a several long distance trips with these 2,000 miles plus with these towing a loaded heavy trailer . They handle weight well and have no bad traits. Picked up a spare tire from etrailer going on another trip a spare was original 12 yrs old. Hopefully i never use bought load range E and have them set at max inflation pressure.
GP
10/11/2020
Tires still working and wearing well have gone on 2 trips 6,000 miles total. Great tire at a great price
The service from etrailer for the Kenda/Karrier ST225/75Rx15 trailer tires was excellent. They shipped and arrived as promised. The price point was good as well as compared to others who sell these tires. These Load Range E will be used on my 25' enclosed car hauler trailer, replacing the factory tires that lasted only 18 months. The trailer is headed to Florida and back, from Pennsylvania, in March, so they will get a good workout.
Robert A.
1/18/2020
The tires have preformed well. They have made several long trips with heavy weight with no problems. Wear has been slight after approximately 6000 miles. I will buy another set for my smaller trailer when they are needed.
I tried unsucessfully to order tires from simpletire.com but their web site would not process my order over the weekend so on monday i tried all day to talk to anybody to help me out but never got thru so tuesday i decided that if i cant even get thru to the sales dept why would i want to purchase there so i looked around and etrailer had the exact tires i wanted and a 110% low price garrantee so i called to get assistance and Judy answered and got me all hooked up i had to purchase them full price then she credited my account within 15 mins they were shipped that day and they were at my house thursday when i got home - Awesome, they came in individual boxes and when i opened them up and checked it out they were all the correct size and load rating and the build date on all the tires were 4516 which means they were built in the 45th week of 2016 which makes them about 3 and a half months old i am very pleased with Judy and all her help and etrailer for the super fast shipping i will be shopping here in the future
Mike B.
4/2/2018
got about 5k miles on them now and they all are performing as they should
nice tires. have 5000 miles on them so far and they are working great. Company is so easy to work with and fast shipping at fair prices. I have been getting all my trailer tires/wheels from etrailer.
Really good service, I highly recomend this company for buying your tires thank you
The first set I purchased lasted 3 years and then one the tires started to separate and buldge so I had to replace them. Time will tell if this set is any better.
Really a quality tire very fast shipping looks good on my car trailer!!
Very fast delivery, perfect fit and matches my other tire perfectly. Thanks!
Great tire, i used to buy random tires, whatever was on sale and always experienced blow outs, recently purchased a new trailer that came with all crappy trailers and slowly swapping all 8 to kendas as they blow out. never had an issue with these! def the best bang for the buck out there
My son had good things to say about these tires and I wanted to try a different brand after having some issues with the ones I was using.
I checked with my local guy and he couldn't get these.
Found them on etrailer and they had the lowest prices with free shipping. Problem was I needed them for the weekend and you know how shipping goes, they are never there when they say they will be.
Well I spent $25 extra to get them here in three days. I could not believe it, they were here in three days! Must have been that two hours after I ordered them I already had a tracking number, that must have helped!
I got them mounted up with my new valve stems and they are looking good.
Fast accurate delivery, loved how tires were boxed when delivered.
Great tires. I have them on my 42' enclosed 3 axel. Packed everything we own, 32,300 lbs and went from upstate western NY to SC, pulling it with my Ram 2500 5.7 Hemi, totally overloaded and they pulled nice ! Then the trailer sat in storage, still loaded and didn't lose any air in 8 most. Would buy again for sure.
We have a 5th wheel & we normally travel about 3 months a year. However, this year we are traveling 6 months and we will be home by the end of April. So far we have traveled in 27 states and about 14,000 miles. I can't say enough about how good these tires have performed. Especially, since many of the roads and highways we have traveled are very rough. The tires are performing greatly, no flats, very good thread wear, (even on all four), no noise, no problems. I love them. +
Customer wanted a heavy duty tire we delivered,great quality. Beach Trailer Sales
It's hard to find a 10 ply rated good tire. e trailer has them
I purchased these for my Casita travel trailer 1 year ago. The transaction was very easy. I'm very satisfied with the quality of the tire. I have about 4,800 miles on them so far; they are holding up very well! I would definitely recommend etrailer as a source for tires!
Brooke M.
3/10/2025
I am so happy to hear that, Chris! I love the photo you sent in, too. It looks like the perfect set up for some fun memories and relaxation. Have you been able to take the Casita out this year?
I am totally impressed with eTrailer. I both chatted and texted with customer service and both were great. I finally order my tire and rim. I am amazed that it was delivered in under a week for free!!!
I would definitely shop eTrailer again.
These are great tires. I have pulled this trailer over 200,000 miles. Hence, I’ve gone through a few sets of tires. These tires are wearing extremely well and the trailer tracks nicely.
David
4/26/2026
One year later and the tires still look nearly new. I’ve hit a number of deep pot holes at 45 mph+ and no visible damage to the tires. The trailer still tracks the same as the first day they were installed. I will be buying these tires for my 25 foot travel trailer when the old ones were out.
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Scott
7/1/2020
still keeps air and works fine