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16" conversion with LT tires again

htwheelz67
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I have a WW fs3000 3 axle toyhauler, always used Maxxis 225 75 15 E tires never a failure until last month didn't even know and scratched up my siding a bit, so I am contemplating doing the 16" switch with LT tires, I don't have flipped axles but from my measurements a 225/75/16 will fit with no mods, barely 1" diff in diameter, sect width, tread width pretty much identical. I found new WW style 16x6 rims that will fit perfect for 80 bucks a pop. My trailer is an aluminum sided model, comes with 225/75/15 d tires rated at 2540 lbs, my maxxis E's are rated at 2830 lbs, the 225 75 16 E rated LT tires are rated at 2680 lbs.

Is my assumption correct that the LT tires which are rated higher than D's lower than E st tires should do the job? if I subtract the 10% for LT tires it is lower than the D rated st tires but about 1500 lbs over the 13k GVW of the trailer be adequate? I think the lower heat/ higher speed rating, made in the USA (a huge plus) offsets the minor weight ratings plus 1400 is tongue weight. Mich XPS are way overkill, I can get bridgestone durvais 500 for about 160 a tire or a good usa hiway tire for about 125 each, I look at my overloaded plumbing box vans even with the cheapest MIC LT tires I have never had a failure with 4 tires holding 9800 lbs with a combined load rating of 12k. Got to pull the trigger next week, 875.00 for 6 maxxis st 225 75 15 E's or about 1800 for 7 new rims and LT tires. I'm leaning the 16" LT tires. I drive 260 miles trailer is parked for 6 months in Parker AZ, drive back 260 miles and go to the dessert 3-5 times a year max maybe 1200 miles so maybe 2k a year at the absolute max.
9 REPLIES 9

AH64ID
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Explorer
I just did the 16" swap with R500s and I am so far very pleased with their towing performance. I never had any ST issues but wanted stronger tread for better puncture resistance.

I would be rather leery of 6 tires for under $500, they sound pretty cheap. It is also odd it has a speed rating other than 65 and that their website shows a load index. ST tires use neither. Their website also lists them as a mobile house tire.
-John

2018 Ram 3500-SRW-4x4-Laramie-CCLB-Aisin-Auto Level-5th Wheel Prep-Titan 55 gal tank-B&W RVK3600

2011 Outdoors RV Wind River 275SBS-some minor mods

lincster
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htwheelz67 wrote:
the rims I wanted were out of stock they told me a couple weeks at least, weekend warrior style so I decided in the interim to buy some new st tires, I actually had good luck with maxxis and westlake, turns out the new westlake st tires have a very similar design to the maxxis with a nylon cap, got 6 on ebay 225 75 15 10 ply E tires for 491.00 shipped to my door, then the next day my rims showed up........go figure. I'll use these for a year or so and then do the LT conversion, one thing I noticed on the westlake tires is the DOT code showed they were made 2 months ago and the max speed rating is now 75 mph vs 65 mph. The westlakes seem to be a very nice beefy tire much like the maxxis but around 80 a tire vs 130. no tax and free shipping too.


When it comes to tires, u get what u pay for.
2022 F350 PSD CC 4X4 Dually to pull 2006 LE3905

Lincsters Truck/Trailer

Lincsters Rail

Strabo
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htwheelz67 wrote:
the rims I wanted were out of stock they told me a couple weeks at least, weekend warrior style so I decided in the interim to buy some new st tires, I actually had good luck with maxxis and westlake, turns out the new westlake st tires have a very similar design to the maxxis with a nylon cap, got 6 on ebay 225 75 15 10 ply E tires for 491.00 shipped to my door, then the next day my rims showed up........go figure. I'll use these for a year or so and then do the LT conversion, one thing I noticed on the westlake tires is the DOT code showed they were made 2 months ago and the max speed rating is now 75 mph vs 65 mph. The westlakes seem to be a very nice beefy tire much like the maxxis but around 80 a tire vs 130. no tax and free shipping too.


Atleast you have NEW tires, regardless of size or type, so thats a big plus!!!
04' F350 PSD TB SC FX4 XLT, TH-04' 32' Sandpiper Sport Fifthwheel WB Dual Axle
07' Rhino 686 SS106-ITP-AFE-BRP-T4-CDI-KIBBLEBWHITE-CVT-TSTICH-Ridgid LED LightBar-HID Conversion Kit-LIVEWIRE
04' Honda 250 Sportstrac quad
05' Honda 400 Ranchers quad

htwheelz67
Explorer
Explorer
the rims I wanted were out of stock they told me a couple weeks at least, weekend warrior style so I decided in the interim to buy some new st tires, I actually had good luck with maxxis and westlake, turns out the new westlake st tires have a very similar design to the maxxis with a nylon cap, got 6 on ebay 225 75 15 10 ply E tires for 491.00 shipped to my door, then the next day my rims showed up........go figure. I'll use these for a year or so and then do the LT conversion, one thing I noticed on the westlake tires is the DOT code showed they were made 2 months ago and the max speed rating is now 75 mph vs 65 mph. The westlakes seem to be a very nice beefy tire much like the maxxis but around 80 a tire vs 130. no tax and free shipping too.

lincster
Explorer
Explorer
I had that exact same trailer and did that exact upgrade. Everything fits and works great. No more worrying about tires after that.
2022 F350 PSD CC 4X4 Dually to pull 2006 LE3905

Lincsters Truck/Trailer

Lincsters Rail

baker01
Explorer
Explorer
I have been using 225 75 16 E on my WW FSC3200 for 5 years. No issues. I bought steel wheels online for $50 each.
Dusty & Mikki
Sirverado 3500 Dually 4x4
2019 Fuzion 369
2018 XPT
2006 Honda CRF450X
2006 Rhino 660
Harley FXSTC

TexasChaps
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Might I suggest Maxxis UE168n Bravo at $132 ea ?

Helmsey
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What are you axle ratings? If they are 5000lb axles than the LT's you mentioned would work.
KK4PFX
2015 Chevy 3500HD LTZ Dually
2013 Sandpiper 365SAQ

JIMNLIN
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Is my assumption correct that the LT tires which are rated higher than D's lower than E st tires should do the job?

The LT225/75-16 E is rated at 2680 lbs which fits between the 15" ST D and E tires.
Great upgrade from the OEM 15" ST 2540 lb D tire.

if I subtract the 10% for LT tires it is lower than the D rated st tires but about 1500 lbs over the 13k GVW of the trailer be adequate?

There is no subtracting any percentage of capacity when using a LT tire on your trailer...only the P tire has that requirement when used in a truck or trailer position.

Mich XPS are way overkill, I can get bridgestone durvais 500 for about 160 a tire or a good usa hiway tire for about 125 each,

The R500 Bridgstone are a very popular tire on some of the stock haulers/commercial haulers webs I frequent for their trucks and trailers.

Tires like the XPS Ribs and the R250 Bridgestone have a all steel ply carcass are just about bullet proof on a tri axle trailer. Check out the R250 prices vs the XPS...quite a difference.

You can get 16" modular steel trailer wheels at around 45-48 bucks each on line.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 two slides