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Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Subsilked on October 29, 2018, 07:16:25 pm

Title: Switching from 8R 19.5 to 225 70 19.5
Post by: Subsilked on October 29, 2018, 07:16:25 pm
We have 6" wheels...  we are having trouble finding sources for the older style 8R tires... 9 hours on NM hwy waiting on AAA to find our tire size....  can we swap out for the more popular ( in stock) 225 70 19.5 ??  We have found  Continental HDR ( F) ... 

We want to replace all 4 drive tires and see if there are other options for the steer tires. .  Thanks in advance for advice... 
Title: Re: Switching from 8R 19.5 to 225 70 19.5
Post by: craneman on October 29, 2018, 07:37:46 pm
read this
The Effects of Changing From 8R19.5 to 225/70 19.5 Tires | It Still Runs (https://itstillruns.com/effects-8r195-22570-195-tires-7440499.html)
Title: Re: Switching from 8R 19.5 to 225 70 19.5
Post by: Subsilked on October 29, 2018, 07:57:02 pm
read this
The Effects of Changing From 8R19.5 to 225/70 19.5 Tires | It Still Runs (https://itstillruns.com/effects-8r195-22570-195-tires-7440499.html)

Great.    We have measured our spare tire wheel and measure 7".  Could this be right ?  Stock wheels for the original 8R would have been 5.25" ???  Are we measuring rim to rim ?  Or is there an inside rim measurement that is being used ? 
Title: Re: Switching from 8R 19.5 to 225 70 19.5
Post by: Protech Racing on October 29, 2018, 08:10:33 pm
The correct  rim  width measurement is  tire bead to tire bead. So if the outside width of the rim is 7in , the bead will be about 1 in or a little less like 5.5 or 6 in.
 Googlate it , should be pics.