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  1. #1
    Site Sponsor Malco1's Avatar
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    Load range D to E

    I have a 2018 Imagine 2250 with Westlake ST205/75/R15 LRD 65psi
    I would like to upgrade to ST225/75/R15 LRE 80psi
    Can I do this without changing the wheels? The wheels are aluminum.

  2. #2
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    I’d either call the wheel manufacturer (likely Lion’s Head) and ask, or crawl under the trailer and see if the wheels are stamped with a maximum pressure.
    John & Kathy
    2014 F250 Lariat FX4 6.2L SBCC
    2014 Reflection 303RLS
    SW Indiana

  3. #3
    Site Sponsor BeerBrewer's Avatar
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    I read you post earlier today and I too wondered if I could change my tire size and rating. I had seen other posts where it's been said that the max pressure is stamped in the back of wheel. So today while installing my new Centramatic wheel balancers I figured that I learn what my max tire pressure is. To install the Centramtics I had to remove the wheels and install the balancers between the hub and wheel. So while I had the wheel off the trailer I looked for an indication of how much pressure they could hold. Unfortunately I didn't see anything about pressure, but I did see a max load value of 2830 lbs which seemed to coincide with the max load of my E rated ST225/75R15 tires. I also saw some numbers relating to specs and that they were made in China but no manufacturers name. Also none of the numbers or writing on back of the wheel was visible unless I removed the wheel from the trailer. So it would not surprise me if you removed a wheel that you'd see similar info.

    Just to give you an idea of what you'd see on you wheels I attached a pic of the inside of one of my wheels and also a pic of outside of the wheel after the Centramatic wheel balancer was installed.

    Click image for larger version. 

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    You should probably reach out to Grand Design and ask them.

  4. #4
    Site Sponsor Skiddy's Avatar
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    The way I understand it a 225 tire needs a 6” rim minimum, are the rims on the smaller Imagines 6”, a 205 could mount on a 5.5 or 5” rim. I think the wheels are Cheetah’s.
    Judy & Larry
    Ty and Ali the St Bernard drool machines
    Delta, British Columbia, GWN
    2019 Imagine 2150RB - lovingly christened “IM-A-GENE” towed by Dusty via Andersen 3350.
    2018 F150 SCREW 3.5 EcoBoost Lariat - respectfully christened “Dusty”.

  5. #5
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    You may have to go with 225/70/R15 else the overall diameter is slightly more than the original. Do you have enough clearance for that?

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