Classic Winnebagos & Vintage RVs

Topic Boards => Dodge - Chrysler Chassis => Topic started by: mattyj858 on April 26, 2016, 11:19 AM

Title: Tire conversion
Post by: mattyj858 on April 26, 2016, 11:19 AM
i spoke with a tire guy who said the tire size conversion from a 8 x 17.5 would be a 215/70/17.5 load G. Is this correct for a 73 brave 20. It doesn't appear to be split rims, no apparent split in the rim and tubeless tires.
At this point he only has 4 and considering replacing all four in the rear and waiting for the fronts, any issue running radials in the rear and nylon up front?
Hope this works as he has a set of 4 installed for $200
Title: Re: Tire conversion
Post by: legomybago on April 26, 2016, 12:33 PM
Don't mix and match Bias ply tires with Radials....You'll create a crab walk effect when going down the road. I did this once when I was a poor kid trying to save money...wait still am Hm?  I put a cheap used set of bias tires on the rear of my 1968 ford f250. I still had the radials on the front, the truck drove like crap on the highway.
Title: Re: Tire conversion
Post by: mattyj858 on April 26, 2016, 11:05 PM
Thanks had a feeling about that. I'll wait for all 6 tires


Does anyone know if the 215/70/17.5 is the right conversion for 8x17.5 ?
Title: Re: Tire conversion
Post by: brians1969 on April 27, 2016, 06:10 AM
Here's a calculator to play with:

https://tiresize.com/comparison/ (https://tiresize.com/comparison/)

They also have "tire size converter" and "tire height calculator" for you to click on.
Title: Re: Tire conversion
Post by: mattyj858 on April 27, 2016, 11:04 AM
Thanks couldn't seem to get info on 17.5" rim???
Title: Re: Tire conversion
Post by: mattyj858 on May 04, 2016, 12:42 AM
Hi guys, anyone have experience using 215/75/17.5 on the Dodge Rm350 8 lug?
I have a connection for all 6 tires for a screaming deal. 90% + tread on all 6, $300 installed. these are load G


I hear there might be a bead issue?


Will the ther be enough space between the rear dully? Someone mentioned a "kissing issue"


Any info is greatly appreciated, and hope these work!
Title: Re: Tire conversion
Post by: Froggy1936 on May 04, 2016, 11:50 AM
If you find they are the correct size make sure you ck the production date,  Time marches on & 7 years is the useable life of the tire even if never used !  W% Frank
Title: Re: Tire conversion
Post by: mattyj858 on May 04, 2016, 11:57 AM
Quote from: Froggy1936 on May 04, 2016, 11:50 AM
If you find they are the correct size make sure you ck the production date,  Time marches on & 7 years is the useable life of the tire even if never used !  W% Frank


I am hoping someone has experience on this size, I don't want to take a gamble and find out they rub or worse stuck on the side of the road.
Title: Re: Tire conversion
Post by: Gus79Chieftain on May 08, 2016, 05:19 PM
I just had 215 75 17.5 put on my 79 Cheiftain....new ones and they work great.
Title: Re: Tire conversion
Post by: mattyj858 on May 08, 2016, 08:55 PM
Awesome! I did make a mistake and confirmed I have a 300 chassis.
The price I found is too hard to turn down. I think I'll bring the rig in this week.
Title: Re: Tire conversion
Post by: mattyj858 on May 17, 2016, 12:36 AM
Hey guys, I put 215/75/17.5 on my 73 Brave 20 ( not split rims) today with no issues. Man big difference from the bias ply 8 17.5r
Title: Re: Tire conversion
Post by: Jonbbrew on May 18, 2016, 06:28 PM
Never shopped for truck tires like these Rv load ones. So is it safe to assume we all have to buy $1500 worth of tires to only last us 7 years?


Or is there some sort of be for that has screaming deals?
Title: Re: Tire conversion
Post by: mattyj858 on May 18, 2016, 06:55 PM
I think I got really lucky I scoured craigslist and found 2 year old tires based on the DOT dating for $300 installed.
Title: Re: Tire conversion
Post by: Rickf1985 on May 18, 2016, 07:04 PM
Look at the Samson tires if they have them in your size. Good prices and no complaints from any of us who are using them.
Title: Re: Tire conversion
Post by: Licksquidink1 on August 27, 2021, 03:59 PM
Looking to substitute 215/75/17.5 for the original 8.0 x 17.5  for the duallys. My research says  215's are 8.46 wide. Will the rub against each other? It's a 1978 Brave, not split rims.