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Old 11-15-2015, 04:16 PM   #1
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16 inch to 19.5 inch wheels

Hi All,

Searched the forum for an answer but found none. I know that other weight ratings will be exceeded but I really would like to up my capacity with a change to 19.5 inch wheels and tires.
Does anybody have any insight into this topic?
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Old 11-15-2015, 04:44 PM   #2
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I did this with my 97 460 F53. I don't recall getting hardly any weight capacity at all. IIRC, all it really did was give me a safety margin in tires as the XPS RIBS were at max pressure whereas the 19.5 I went to maxed out at weight at a lower pressure. Search for Rickson.
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Old 11-16-2015, 07:11 PM   #3
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You will have quite a gear ratio change when going from 16 to 19.5 tires.
You may find your engine operating at an RPM that is out of its designed power band when traveling at your usual speed.
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Old 11-16-2015, 07:26 PM   #4
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Quote:
Originally Posted by dieselclacker View Post
You will have quite a gear ratio change when going from 16 to 19.5 tires.
You may find your engine operating at an RPM that is out of its designed power band when traveling at your usual speed.
Not necessarily true. There is a combination you can get that will keep everything the same as if running the 16" tires. I don't remember the specifics but again, see the Rickson web site. When I had them, there was no difference going from 16" to 19.5".
http://www.ricksontruckwheels.com/faqs-speedometer.php
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Old 11-21-2015, 09:15 AM   #5
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I put 19.5" on my Southwind 35P 1997 model, it had 16".
The 19.5 tires far exceed the weight capacity of the 16", a good safety margin.
My speedometer is exactly right according to GPS, it was a little off with the 16" tires.
The height of the 19.5 tires is just a little more than the 16" tires.
I have Sailun S637 Tires on the MH and they are GREAT!!!
Just got back from a trip to Big Bend, TX area and I really like the tires etc. Even helped the fuel mileage a little, due to Lower Roll Resistance...
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Old 11-22-2015, 04:43 PM   #6
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I was wondering about that also. I have 16" rims on mine.
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Old 01-31-2022, 02:11 PM   #7
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Wanting to upgrade to 19.5 too!

Hi Everyone! This is my very first post so I am unsure how it is going to go! My 1997 F53 H/R 32cg has the 16" rims and I am uneasy also about the weight capacity of the tires. Fully stocked for the road I am just at my GVWR rating of 17k lbs with the rear axle a couple hundred lbs over. Have been researching what 19.5" rims are available and even considering going aluminum. I have put a LOT of blood, sweat, tears, and cash into this family heirloom which I inherited from my parents, the original owners, and want to let my kids (40 & 38 years old!) and grandkids take it out with a decent safety margin. For those of you who took the plunge what are your opinions? I am discounting the cost for now figuring on about $4k... How was performance and ride? I have a rear track bar, koni shocks are on the way, 4ea Ride Rite air bags with dash controls/onboard compressor, and a safety plus unit sitting on my work bench.

Thoughts, suggestions, condemnations, are appreciated. This project has been my Covid 19 hobby and I want to make it as safe a ride as I can! Thanks in advance. Dirtman64
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Old 01-31-2022, 02:28 PM   #8
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I can't give any insight after making the change; however, I can give some insight to not making the change. We had a 98 Winnebago Adventurer and loved it. Until I had three blowouts in one day. Out of six 16" tires, we had five of them blowout. One while we were sitting still with the jacks down. I had planned to change the tires and wheels to 19.5, but ended up trading instead. We had Kelly tires on ours, and I thought they were pretty good tires made by Goodyear. Just based on our experience, I would recommend making the change to 19.5's now rather than later.
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Old 02-01-2022, 08:31 AM   #9
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Back in So Texas

You can see my post above, we changed to 19.5" and I would never go back. They ride good and will last longer than you can safely run them due to the age of the tire.
Get it done now before someone has a problem due to tire failure....
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Old 02-01-2022, 09:57 AM   #10
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The change to 19.5 will indeed give you better tire load rating choices,
but that will not "up your capacity" in terms of GVWR, or GCVWR.
It will however increase your tire safety margin capacity and likely offer better ride characteristics. Never exceed rated GVWR or towing capacity.
With this in mind, I say good idea.
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