Are 16.5's really that bad? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-15-2001, 08:11 PM
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Are 16.5\'s really that bad?

Are 16.5 inch wheels/tires really that bad? I hear they have no 'bead protection' could one of you elaborate on that? What kind of problems would/could I run into?

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post #2 of (permalink) Old 08-15-2001, 08:37 PM
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Re: Are 16.5\'s really that bad?

Well I was scared by the folks here too. I run 39.5's on 16.5 rims. I have had them down to 8 Psi and rock crawled with them at 15. Never had any problem. Tire shop had to use bead blaster to set them so if I ever did break a bead I would be in trouble. My tires are bias I dont think I would try this with a radial because of the weak sidewall.


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post #3 of (permalink) Old 08-16-2001, 10:41 AM
 
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Re: Are 16.5\'s really that bad?

jutinbailey, the bottom line is If you don't need to bleed down your tires (Like rock crawling or sand dunes) then 16.5 are fine.
BUT if you do get into situations that require airing down, you should avoid 16.5"s ! Some might get away with it few times but eventually it will pop the bead, and depending on where you are at when that happens, it could be down right DANGEROUS [img]/wwwthreads_images/icons/shocked.gif[/img] and at the least very inconvenient[img]/wwwthreads_images/icons/mad.gif[/img]
Besides most tire companies are comming out with all the same sizes but in a 16" .

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post #4 of (permalink) Old 08-16-2001, 11:34 AM
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Re: Are 16.5\'s really that bad?

The main difference with the 16.5" rims, versus other sizes, is that they do not have an inner lip to help retain the bead. If you look at a 15" rim for example, they have a small lip about 1" in from the outer edge, and this small lip definitely helps hold the tire on the rim. 16.5's on the other hand do not have this, plus the bead seat is at more of an angle and both of these conditions can result in it being easier to lose the bead on the tire. Of course, this really isn't much of an issue unless you air down though I have seen a 16.5" tire lose a bead at 20 psi and the trail.

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post #5 of (permalink) Old 08-16-2001, 06:10 PM
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Re: Are 16.5\'s really that bad?

now why don't manufactureres make the 16.5 with the extra lip? wouldn't this be a simple thing to do and save a lot of heartache? I am kinda scared of airing down much when i go to the dunes.

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post #6 of (permalink) Old 08-17-2001, 11:51 AM
 
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Re: Are 16.5\'s really that bad?

I think the industry will try to get completely out of 16.5 tires (Of course this will take a long time)
I doubt you will see any new tires designs even being made in that size.
It finally is starting to look like most manufacturers are making new designs and more sizes available for 16" wheels![img]/wwwthreads_images/icons/smile.gif[/img]
Now if the damn price would just go down [img]/wwwthreads_images/icons/mad.gif[/img]

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