Chart from
Carlisle.
This is why I was confused:
6H04561 ST205/75R14 LRD 26.1 7.8 5.5 2040 65 9 81
6H04591 ST205/75R15 LRD 27.1 7.8 5.5 2150 65 9 81
The 4th column is listed as "mounted diameter", the 5th as "mounted width" and the 6th as "rim width". No units are provided, but I assumed inches for those columns (pounds, psi and mm for the remaining columns). I misfigured as columns 5 & 6 were the same then the ID of the tires were, too. Mea culpa!
Unfortunately Carlisle doesn't make an R14 in a larger size; I haven't checked Maxxis or GY yet. Otherwise as you say I'll need differet rims.
Thanks for setting me straight. That's a good thing about asking questions on this forum.
Ken
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Now: 2019 Winnebago 2500FL w/e2 WDH;Sold: 2015 Bullet Premier 19FBPR (shown)
2012 Ford F-250 Lariat Super Duty Crew Cab (gas 6.2 L, 3.73 gear ratio 2WD, 172" WB)