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No waiting on a shop to mount or inflate anything. The Kenda 5.30-12 Bias Trailer Tire with 12" Galvanized Wheel (part # AM30790) comes fully assembled and ready to install. It’s a simple bolt-on setup—just set the pressure to 80 psi and go. The combo meets DOT specs, so you know it’s built for the road from the start.
This tire is made for reliable towing under weight. Each 5.30-12 bias-ply tire has a 6-ply rating and carries up to 1,045 lbs at 80 psi. The matching steel wheel is rated at 1,250 lbs, giving plenty of margin for gear or cargo. With a 65-mph speed rating (K), it’s set up for everyday hauling with confidence mile after mile.
Saltwater, rain, or long-term outdoor storage won’t eat into this wheel. The 12" x 4" steel rim is hot-dipped galvanized for lasting corrosion resistance. It keeps its finish even in harsh conditions, making it a solid choice if your trailer sees wet launches or humid climates.
The bias-ply build uses crisscrossed nylon cords at a 30–45° angle, giving the tire stiff sidewalls that flex together over bumps and rough surfaces. The result is steady handling and a smooth feel whether you’re towing short distances or on rough backroads.
Fitment is straightforward with clear specs: a 4 on 4 bolt pattern, 0 offset, 2.84" pilot diameter, and 1/2"-20 wheel bolts. The inflated tire measures 21.9" in outer diameter and 5.6" in section width, so you know exactly how it’ll sit once installed.
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:
95% were satisfied with this product
5% of customers were not satisfied
Ratings & Reviews
One word....DELIGHTED!
Best customer service.
Best tracking information.
Galvanized looked better than expected.
Packaging was very well thought out and easy to handle.
Delivered on time.
You don't find this degree of material management out side of the military and I wish CEO's of other companies would compare.
The very best!
I was looking to replace and possibly upgrade the tires and wheels I was using. All of the web site's info was enormously helpful in selecting a tire/wheel combination that did exactly that and for a great price.
Tire/wheels arrived as promised (on time and exactly as described).
Will use etrailer again and would recommend it to others.
Dan
5/12/2021
1 year later and tires are great, easy rolling, great stability, carry the weight with ease. Looking forward to long service from them.
Always a treat to open the box that new tires and wheels come in from etrailer. The galvanized rims were so shiny and bright they'd look great just hanging on a wall. Never had any issues with wheels and tires from this seller. I will be back again soon as I just purchased another used boat trailer with 8" wheels, (I prefer 12" wheels and tires for the smoother ride).
Allan C.
12/3/2022
One year later and the wheels and tires are still working perfectly. No leaks, no flats, no wobbles.
I could not be happier with Etrailer's customer service. I ordered the same size in a different style with express shipping to get ready for a cross country trip. But the item was out of stock. I received an email from Kat letting me know this, and even though it was 10PM EST, she still helped me find an alternate product to get to me right away. This saved my start date for my trip. The tires and wheels were perfect and I just drove on them from MA to CA. I put them on a Jayco Qwest Pop up. There were no issues and the tires still look brand new. Great product and super customer support. I will continue to purchase my trailer / camper items from them.
Thanks so much!
Dave W.
8/23/2017
Tires and wheels still look great. Over a year and there were no issues. Highly recommend.
Couldn't find the size of tire I needed on the island. For a little bit more I figured I get the tires and rims together. Took a few minutes to pop on. Ready to go fishing!
Just got them and put them on, so I don't have much useful info. Arrived timely, correct bolt pattern, andno issues on 20 mile run to boat shop.
Delivery was fast and the tires were as ordered. Great deal on tires & rims. Will install them on my boat trailer in the Spring. Impressed so far !
Items came sooner than estimated, very well boxed! Both wheels and tires look great, looking forward to getting them put on my log splitter!
Great company, wonderful sales staff, fast service and answer all my questions. I have used this company for years and highly recommend them to anyone that owns trailers Excellent service always.
wow......incredible deal on these tires / wheels and if that wasn't enough, the fastest delivery imaginable !
Of course when In built this splitter 25 years ago, I just modified some wheels to fit it by using washers and filing out the lug holes.....NOW, it's done right !
Many thanks, I will be back !
Excellent customer service, fast accurate shipping, super price! Two new wheel tire assemblies and a light kit, delivered in two days....made pick up of my 1971 Mariner 2 + 2 in Baltimore possible! Thanks guys!
Nice wheels I blacked out the center with flat black the did a clear coat. Gave it a more define look.
Scott
10/15/2023
Still looking and rolling good
Mike L.
11/7/2023
Switched from a 5.7-8 to a 5.3-12, and I was worried about clearance, but I still have +/- 2 inches under the fender. I also like the profile of the bigger tire for the trailer. I always love etrailer! Quality parts and quality service everytime!
Whees/Tires came as described! Not knowing much about trailer tires/wheels, etrailer had all the info I needed! Easy to understand, read, and find!
Replaced old original tires on my boat trailer along with rusted rims. Tires look great.
Received my order 2 days earlier than expected.
Once again etrailer with great products and outstanding customer service!
Won't use anyone else.
Fantastic - received unbelievable customer service that walked me thru the whole process of picking the right tire and rim. Even gave advice for a broken stud.
Gave new Life and Ride to a classic older Motorcycle hauler - Ready to hit the road.
Picked up 2 spare tires for this trailer from etrailer.com on the way to Phoenix, AZ. There are 2 spares on the trailer and a special paint job. Harbor freight trailer with 8 inch tires. 2011 Smart 4 2.
The product looks good in the pictures. The tires were just as expected. The set was delivered with equal tires pressure. The wheels are another story. The wheels are muddled and appear to be very poor casting with lots of slags. The bolt holes were heavily burred and lacking a clean machining as well. One tire was mounted with the stripes outward and the other with stripes inward. I am hoping this is just cosmetic, however, I prefer my camper to look nice and the same on both sides. The set will complete a 600-mile trip soon. I hope they perform better than they look.
Customer service does exist on the Internet! Etrailer delivers at a level of service that I did not think existed on the Internet. The team at etrailer rushed my tires out and saved our Memorial Day camping trip. I got follow ups every step of the way, and a very prompt response when I expressed the urgency of my order. The tires are great, and the proper rating for my trailer (they are nearly impossible to find at the big chain stores). After hearing about the site on several forums I decided to give them a chance and will never buy my trailer products anywhere else again!
Excellent quality, fast shipping. I am restoring a 1992 Jayco popup and I bought, wheels and tires, trailer hitch and a 4-way flat to 6 square wiring adapter for the camper. Great experience...I plan to buy from etrailer again.
Just what I needed! These wheels and tires are for an old Sea Lion trailer that holds an old Rhodes 19 sailboat. I will not have time to restore the boat this year - too many other boats for customers - but it will be ready for next Spring. I will sail the vessel on Lake Champlain and will haul it up there on these new tires. As I fully prepare the trailer, I will be getting more bits and pieces from etrailer - including a spare wheel and tire and mount.
I have used etrailer for many years. I own 5 trailers myself - and occasionally restore or improve my customer's trailers. Also, I purchased my trailer hitch for my 2018 Forester from etrailer. I have always been perfectly pleased with the service and products.
Super fast shipping, order at noon 1/8 - received before noon 1/10. Product as expected, time will tell how they ride and wear.
Scott K.
1/11/2020
Very Happy, Tires have worked out perfect.
Very happy with these tires and service! Straightforward ordering and delivery. George from etrailer reached out to me following a glitch in the payment process that happened because I had changed the address on my credit card as I was moving overseas. I was also dealing with a very tight time constraint, but the tires were perfect and arrived on schedule. Installation was no problem, and I had a smooth 730 mile journey from Chicago to Baltimore to deliver the boat and trailer for shipping. And now the boat, and the tires, are here with me in New Zealand :).
tires and wheels better than expected - delivery great - time good
The tires and wheels were delivered yesterday afternoon. Incredibly fast! Awesome service by Kelsey, tracking was so easy and well done by their shipping team. Thank you
Scott
8/17/2025
The tire and wheels are working great. They made it easy to pick the right size and as I mentioned before service was fantastic. If you are looking for great products and service do not hesitate to use “etrailer” they really know their stuff! Great company…
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Dave M.
5/26/2016
They look and act like the same day they arrived, Im delighted to this day.