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-   -   15 inch vs 16 inch wheels (http://www.airforums.com/forums/f465/15-inch-vs-16-inch-wheels-155261.html)

goliad1 08-14-2016 05:04 PM

15 inch vs 16 inch wheels
 
I am going purchase 27 ft flying cloud. Read about people going with 16 inch wheels. What are advantages and the science of doing this? Disadvantages?
Thanks
Larry

SteveSueMac 08-14-2016 05:13 PM

Hi Larry. There are a lot of threads here that discuss why a 16 vs a 15, as well as several threads that cover using a 15" Michelin on double axle Airstreams. I haven't found the search feature to be too helpful in the app, but if you go to Google and search for "Airforums Michelin 16" you'll see several threads to get you started.

One caution - these topics tend to offer more heat than light from time to time and everyone is willing to spend your money for you 😀

Happy camping!

HowieE 08-14-2016 06:10 PM

The deciding factor for me was the lack of 15 in. tires that I would consider putting on my trailer.

I travel at speeds well beyond the rated limit of those tires that were available when it came time to buy tires.

Mrjkq 08-14-2016 06:16 PM

16in Michelin LT tires come with an E load rating, ideal for Airstreams. The 15in are not load rated that high & considered to be passenger car tires, some on this forum use them with success. It's your call!

Wingeezer 08-14-2016 06:23 PM

As mentioned, many threads on this topic, but mainly, a lot of people feel that "ST" or "Special Trailer" tires are not very reliable and susceptible to blowouts that can cause very costly trailer damage.

Those that feel that way prefer to use LT "Light Truck" tires and so far they seem to be doing well by comparison - may be early days to judge I don't know - I did go for them after experiencing problems with Goodyear Marathon ST trailer tires. Very happy with the LT tires after three or four years use.

Thing is that for the heavier Airstreams you cannot get a suitable LT tire in 15" size son that is why people switch to 16" wheels.

The Airstream factory now offers 16" rims and LT tires as an upgrade on certain models - I think it is standard on their top of the line trailers now.

The preferred tire brand appears to be Michelin.

I have noticed in teh last years or so that other brands of trailer manufacturers seem to be selling new trailers with LT tires.

Incidentally all ST tires (to my knowldege) are rated for 65mph. maximum, not so for LT tires.

65MPH is probably plenty fast enough with a trailer in tow but I will admit that when on interstates I prefer to keep up more with traffic flow and often find myself driving around 70 "ish!"


Brian.

TheCabin 08-14-2016 06:33 PM

Your request for the science behind the choice is going to a little harder to find, particularly here. I looked for that answer from the tire manufacturers and was never given a technical answer, just told that ST must be on trailers unless trailer manufacturer lists otherwise as shown on the tire placard. As mentioned above there are numerous threads on this subject that even have a couple tire experts posting. Have fun reading.

goliad1 08-14-2016 10:02 PM

Quote:

Originally Posted by SteveSueMac (Post 1835252)
Hi Larry. There are a lot of threads here that discuss why a 16 vs a 15, as well as several threads that cover using a 15" Michelin on double axle Airstreams. I haven't found the search feature to be too helpful in the app, but if you go to Google and search for "Airforums Michelin 16" you'll see several threads to get you started.

One caution - these topics tend to offer more heat than light from time to time and everyone is willing to spend your money for you 😀

Happy camping!

Thanks for the tip on doing a Google search. Now , I have lots of studying to do.

SteveSueMac 08-15-2016 05:34 AM

Quote:

Originally Posted by goliad1 (Post 1835387)
Thanks for the tip on doing a Google search. Now , I have lots of studying to do.


I don't know whether to say "you're welcome" or "I'm really sorry" 😀

You'll find that I'm a person who went with 15" Michelins which are not officially LT (light truck) rated tires but P (passenger car) rated tires. Michelin doesn't recommend using their P or LT tires on trailers but Airstream uses their 16" LT on some models and of using a P tire on a trailer, you should reduce the load capacity of the tire by 9% and be sure that leaves you with some capacity. In my case, fully loaded for camping, my trailer comes in at 6000#. The 15" Michelins I use have a reduced capacity of 1985#/each or an average of 485# of headroom.

Works for me. Others would recommend the 16" version with larger wheels for the larger tires and others would recommend staying with the GYMs that come with your trailer.

Good luck!

Good luck!

moosetags 08-15-2016 08:37 AM

As you read through old tire threads here on AirForums, you will see me posting quite often on this subject. I am an avid proponent of the 16" Michelin LT tires, having had some very bad experience with the Goodyear Marathon OEM trailer tires.

As far as the science behind it, it is mostly junk science with tire manufactures standing behind ST tires as the only ones that can be mounted on a trailer. On the other hand Airstream mounts 16" wheels and Michelin LT tires on their Classic trim level trailers. They also mounted them on the Eddie Bauer trailers. What's with that?????

On my 2005 Safari 25FB I finally upgraded to 16" Michelins after about four years of dealing with ST trailer tires which included three catastrophic highway failures (blowouts). All of this tire grief occurred withing the first 30,000 miles on the 2005 Safari. During this period, I replaced 13 ST tires. After I upgraded to the Michelin LT's, I traveled another 60,000 miles without a single tire issue. When I bought our new 2015 Flying Cloud, I immediately replaced the five OEM tires and wheels with the 16" Michelin LT's. We did this upgrade ourselves, and it ended up costing us about $1,000 as we were able to sell the OEM tires and wheels for $600.

As a final note to the OP, if you are the kind of Airstreamer who occasionally tows the trailer across town to the lake for the weekend, you will probably be just fine with the Marathons. On the other hand, if you intend to travel far and wide at highway speeds, you might want to seriously consider a tire upgrade.

Best wishes in your pursuit.

Brian

AnnArborBob 08-15-2016 09:42 AM

Lot's of good information in the above posts. Bottom line, 16" wheels appear to give you more options for the tires than do 15" wheels. :)

dkottum 08-15-2016 10:18 AM

We changed to 16" Sendel wheels and Michelin tires for much greater reliability on our frequent long distance travels. If all our camping was within a few hundred miles of home we would have kept the original tires.

$1500 for new tires and wheels minus $500 from selling the originals. $1,000 upgrade on four new wheels/tires, kept the original spare.

mcomeaux 08-15-2016 12:25 PM

Tires
 
I have a 2016 27' Flying Cloud that I put the 15" Michelin XL on.
Couldn't be happier I also installed TST monitors for another bit of assurance.
Appears the trailer actually feels like it tows a bit better as well. Being in the tire business myself and having the knowledge regarding ST tires from China I seen magnitude of problems over the years. Either choice would be good for you.

Neophyte 08-15-2016 12:26 PM

I just replaced the 10-year old Carlisle Radial Trail tires on my '67 Tradewind with 15" Carlisle Radial Trail HD's with D load and 81 MPH sidewall rating. Never had any problems with the original Carlisles, they just got too old.
Wasn't broke . . . didn't fix it.

m rafferty 08-15-2016 12:33 PM

I have had two tread separations in two years and done a significant amount of damage to my trailer with ST tires less than two years old with very low mileage.
I live in Florida (hot) and drive 70 MPH. I have read this forum extensively for a year regarding tires. It is clearly time for me to switch to 16' wheels with Michelin LT tires.

pappy19 08-15-2016 12:35 PM

Sell the Marathons while they are still new enough to get $50 each. Yes, it's an expensive proposition to make the change to 16" wheels and Michelins, but how much is your safety worth? When you add a proven replacement for a very shaky ST tire, and also add a set of Centramatic balancers, you will have a winning combo. After 3 Good Year Marathon (GYM) blowouts, I made the plunge and have not had another problem. 42,000 incident free miles and the Michelins still look new.

GatorDave 08-15-2016 01:17 PM

Fully understand why AS'ers buy tires so they can drive fast. Answer the question: how quickly can you stop?? The journey is as much for me as the destination. I have to do 65 to get into high gear. But, have found many roads other than interstates that get me there. However please don't take my advice and get on my "private" freeways. Stay on the interstates. And to answer the issue "what if I break down?" I have broken down 3 times on the interstate and it is the most terrifying experience to have vehicles whiz by 18" away at 70+ mph.
I have a variety of ST tires on my 3 axles with no problems. At 3 years they have done their duty and are replaced. Monitor air pressure frequently.
Just saying and adding more fodder to the thread. by the way none of my tires are goodyears. All trailer tires ST recommendedd by the tire store.

guillaume 08-15-2016 01:39 PM

http://www.airforums.com/forums/f438/15-inch-vs-16-inch-wheels-155261-post1835624.htm
 
I replaced 14" rims with exact match 15" rims on my new 23' International (5 lug pattern - so I'm not in the 16" ballgame). For tires on 15" rim I mounted Nokian Van Tires. Look tough as nails and beat the load rating on 14" Marathons all to heck. Very satisfied with setup so far. Oh, and for those struggling with tire overall diameter on 5 lug setups, these were merely a half inch larger in diameter with respect to space in 23' Airstream wheel housing and possible interference.

May be a possible choice for someone staying with 15" rims on the 25' and up Airstreams. See Nokian website. I've used this brand before on vehicles and totally satisfied. I believe Nokian is a good brand. (not affiliated, just giving recommendation where due)

IAMGLG 08-15-2016 01:42 PM

Buy Maxxis tires and save a lot of time and money
 
Forget the 15 inch and 16 inch debates. Save a bunch of time and money and buy quality Maxxis tires and drive responsibly for the safety of yourselves and others. Maxxis (as I recall) has a 5 year warranty, only trailer tire that has and are made (as I recall) in Thailand, not China with the rest of thgem.

JBBeaubeaux 08-15-2016 02:08 PM

We just had a blowout on 15" tires
 
We just had a blowout on our 15" ST tires.

After getting advice from Vinnie at Vinnie's Airstream Repair, we bought 16" wheels and Michelin tires.

We posted photos of the blowout at http://livinginbeauty.net/2016/08/06...out-of-destiny

gandttimes 08-15-2016 02:18 PM

Quote:

Originally Posted by IAMGLG (Post 1835653)
Forget the 15 inch and 16 inch debates. Save a bunch of time and money and buy quality Maxxis tires and drive responsibly for the safety of yourselves and others. Maxxis (as I recall) has a 5 year warranty, only trailer tire that has and are made (as I recall) in Thailand, not China with the rest of thgem.

Just read about these in latest Trailer magazine. Although I have only had 1 issue with GYM's ( my fault) in 20 years of trailering wisely ( read checking pressure often and nothing over 65 mph) I will probably give them a look.


George


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