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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: explosivo on February 26, 2005, 06:47:18 PM

Title: Educate Me (wheel and tire tech)
Post by: explosivo on February 26, 2005, 06:47:18 PM
What advantages are there of wider wheels? Such as using 10" wheels with a 12.50" tire over 8" wide wheels? Isn't there a higher chance of losing a bead at low pressure with a wider wheel? Are wider wheels just nicer on-road or something?
Title: Re: Educate Me (wheel and tire tech)
Post by: Suzuki1.8 on February 27, 2005, 04:20:30 AM
It gives you a bigger foot print and allows for more of a bluge in the side wall kind of protects the rim.  
Title: Re: Educate Me (wheel and tire tech)
Post by: TinTopper on February 27, 2005, 05:05:35 AM
Quote
It gives you a bigger foot print and allows for more of a bluge in the side wall kind of protects the rim.  



Wrong. The thinner the rim, the more it is protected, because the less it sicks out. I thought that was quite obvious to anyone.

Ideally, you want to run as thin of a rim as you can, while still maintaining a proper footprint for your tire. The thinner the rim, the more youcan air-down without losing your bead... wide rims are for extremely wide tires (ie: 16" wide boggers), or show-trucks.

If you want a wide footprint, air down... I run 31x11.50 tires on 16x5.5 rims. With this width, I can air down to completely 0PSI and never lose a bead unless my front tires are turned full-lock and budged against something and I gas it hard (the spool in the rear likes to push like that).

Now, If I were running tires that were a 14" wide or somethng, I might step up to an 8" wide wheel, but there's a reason why in the competitive world you will rarely, no, I'll say never, see anyone who's winning running a wheel wider than 8" who isn't running beadlocks. (and is actually winning anything)

Hell, there was a guy running 44's in top-truck a year or two ago running 15x7 rims, and he never had a problem with "not having enough footprint" - then again, I wouldn't ever advocate running anything larger than a 40 on a 15" rim anyways, just because you'd need a larger wheel to handle the larger brakes you'd need to stop those tires, and the sidewall flux on a 44-on-15 is ridiculous.
Title: Re: Educate Me (wheel and tire tech)
Post by: Zukipilot on February 27, 2005, 05:55:01 AM
I went with the 15x10 with my 12.5" tires because I wanted a wider stance and it had the BS available to allow the clearance I needed to fit the tires on my Kick.

I have also heard that keeping the rim within the width the factory reccomendes for the tire makes them easier to ballance and handle alot better on road.

Zig
Title: Re: Educate Me (wheel and tire tech)
Post by: explosivo on February 27, 2005, 07:26:52 AM
So then there should be no problem running a 10.50 tire on a 5.5-6" wheel? What about running a 35x14.50 on a 8" wheel?

Strictly offroad with no 'legal' on road driving.
Title: Re: Educate Me (wheel and tire tech)
Post by: bandit86 on February 27, 2005, 08:45:54 AM
if the "footprint" is not on the ground properly cause your rim is too small, your rubber will not flex the way it was designed to, it will definately affect it's life expectancy/reliability.  My friend with the 35x14.5 ran the tires on a 8 inch ford rim.   the tire was really rounded, had a small contact area most of the time till the mud got deep.   most manufacturers give you a basic idea of rim width for a specific tire, it's there for a reason
Title: Re: Educate Me (wheel and tire tech)
Post by: r3cc0s on February 27, 2005, 09:12:48 AM
i've never own'd bias plys' looking at LTB's
heard bad things about flat spots

with a newer gen tracker or even older
how quickly do they develop?
Will I notice the flat spots if I drive with decent PSI' and the truck never sits for more than 12 hours at a time?
Title: Re: Educate Me (wheel and tire tech)
Post by: explosivo on February 27, 2005, 09:28:29 AM
Flatspots are just a problem for the girly-men... I ran my LTB's at 20psi on my Tracker and never had a big problem with flatspots, but then again, the ride was less than smooth ;D
Title: Re: Educate Me (wheel and tire tech)
Post by: explosivo on February 27, 2005, 09:29:19 AM
Quote
if the "footprint" is not on the ground properly cause your rim is too small, your rubber will not flex the way it was designed to, it will definately affect it's life expectancy/reliability.  My friend with the 35x14.5 ran the tires on a 8 inch ford rim.   the tire was really rounded, had a small contact area most of the time till the mud got deep.   most manufacturers give you a basic idea of rim width for a specific tire, it's there for a reason

Hrm... if I go with the 14.5's I'll get some 10" wheels, I guess... Kind've makes me want to go with the 10.50's, though, since I'm a tightwad ;)
Title: Re: Educate Me (wheel and tire tech)
Post by: wildgoody on February 27, 2005, 11:10:54 AM
LTBs will devolop flat spots in 45 min
sitting with 3 PSI in them on 8" wheels

Flat spots are a temporary thing, they
round out just fine after driving for 10-
or so miles, I run 15 PSI on the street,
flat spots are small and almost no ploblem
at all

I also run a 33 13.5 LTB on an 8" 2.5" back
space wheel, no problems with beads poping
or wierd wear patterns, center wear is from
too much pressure, remember just because
the tire says 50 PSI on the side wall, does not
mean you have to run 50 PSI. Also stock skinny
205 tires were supposed to have 23 PSI factory
recomended, bigger tires need less pressure, I
run the LTBs at 15 PSI street, 5 PSI if I plan on
hitting a trail close to home

Wild
Title: Re: Educate Me (wheel and tire tech)
Post by: TinTopper on February 28, 2005, 05:04:16 AM
Quote
So then there should be no problem running a 10.50 tire on a 5.5-6" wheel? What about running a 35x14.50 on a 8" wheel?

Strictly offroad with no 'legal' on road driving.

I wouldn't run it any other way for either width =/


Quote
if the "footprint" is not on the ground properly cause your rim is too small, your rubber will not flex the way it was designed to, it will definately affect it's life expectancy/reliability.  My friend with the 35x14.5 ran the tires on a 8 inch ford rim.   the tire was really rounded, had a small contact area most of the time till the mud got deep.   most manufacturers give you a basic idea of rim width for a specific tire, it's there for a reason

Then either your friend was running tires that were an extremely thick sidewall/ply (which, by rating should not have ever been on his rig per its weight), or was running the wrong pressure in them.
Title: Re: Educate Me (wheel and tire tech)
Post by: explosivo on February 28, 2005, 08:13:27 AM
Alright, I'll throw another wheel/tire size for speculation: What about a 36x12.50 TSL on a 15x8 wheel? The height of the tire should make up for the width of the wheel, correct? And it should be able to keep a bead pretty well when aired down to 5-10 psi, right?
Title: Re: Educate Me (wheel and tire tech)
Post by: chet on February 28, 2005, 08:34:41 AM
thats a perfect width I ran 37x13.50 on a 8" rim and never had any problems.
Title: Re: Educate Me (wheel and tire tech)
Post by: TinTopper on February 28, 2005, 09:25:40 AM
Quote
Alright, I'll throw another wheel/tire size for speculation: What about a 36x12.50 TSL on a 15x8 wheel? The height of the tire should make up for the width of the wheel, correct? And it should be able to keep a bead pretty well when aired down to 5-10 psi, right?


Yep,the only time you need a 10" or wider wheel is when you're a) running beadlocks, b) running 14" or wider tires.
Title: Re: Educate Me (wheel and tire tech)
Post by: 1bigtracker on February 28, 2005, 10:13:48 AM
we run our
15/35R15 TSL's on 10's- never a problem
36/12.50R15 TSL's on 8's- never a problem
34/9.50R15 TSL's on 8's- bead problems at 11 PSI!
but thats just us

stu
Title: Re: Educate Me (wheel and tire tech)
Post by: Mikerpm4x4 on February 28, 2005, 10:33:29 AM
I prefer 10s. Dont forget about leverage. The further out your tires are, on an IFS especially, the easier it will flex. That also = softer ride on IFS. I suppose the wheel bearings probabally work a little harder but I havent had any problems. As far as blowing beads, I have only blown 2 beads ever in my memory...hardly worth worrying about. I genrally run 4 to 6 psi, bepending on terrain. Im not sure if this is completely factual but it has been my experience that painted steel wheels seem to blow less beads than Chrome or aluminum wheels at low psi's.

Mike
Title: Re: Educate Me (wheel and tire tech)
Post by: explosivo on February 28, 2005, 09:25:11 PM
My Tracker still rode like shit on 15x10's on 33x13.50's :P But that's likely due to other factors ;)

As far as painted wheels vs. alum/chrome, I wouldn't go any other way than painted steel. I'm cheap as hell ;)
Title: Re: Educate Me (wheel and tire tech)
Post by: Natebert on March 01, 2005, 01:19:08 AM
Most dented/bent steelies can be repaired on the trail with a hammer.
Cracked alum cannot.

~Nate
Title: Re: Educate Me (wheel and tire tech)
Post by: Bobzooki on March 01, 2005, 01:52:08 AM
Quote
Im not sure if this is completely factual but it has been my experience that painted steel wheels seem to blow less beads than Chrome or aluminum wheels at low psi's.


Well of course, Mike!  Mathematically speaking, we express this as:

P(FUBAR) ~= $(BLING) * SF(GFW) * GAS

Where:

P(FUBAR) = Probability of your rims getting FUBARed.
$(BLING) = How much you paid for those fancy rims.
SF(GFW) = Stress Factor, of having your Girlfriend Watching.
GAS = Give a Shite factor.

So, the lower the $(BLING), or the less you GAS, the less likely it is that you will score a FUBAR.
Title: Re: Educate Me (wheel and tire tech)
Post by: wildgoody on March 01, 2005, 02:00:34 AM
It's the same ratio as putting a
roll cage in your Kick.  As much
as I hate to admit it, I actually
understood that equasion   :o
Title: Re: Educate Me (wheel and tire tech)
Post by: Natebert on March 01, 2005, 03:52:40 AM
Quote


Well of course, Mike!  Mathematically speaking, we express this as:

P(FUBAR) ~= $(BLING) * SF(GFW) * GAS

Where:

P(FUBAR) = Probability of your rims getting FUBARed.
$(BLING) = How much you paid for those fancy rims.
SF(GFW) = Stress Factor, of having your Girlfriend Watching.
GAS = Give a Shite factor.

So, the lower the $(BLING), or the less you GAS, the less likely it is that you will score a FUBAR.



Well put Bob.
:D
Title: Re: Educate Me (wheel and tire tech)
Post by: lil_Truck on March 01, 2005, 04:49:39 AM
Quote
I prefer 10s. Dont forget about leverage. The further out your tires are, on an IFS especially, the easier it will flex. That also = softer ride on IFS. I suppose the wheel bearings probabally work a little harder but I havent had any problems. As far as blowing beads, I have only blown 2 beads ever in my memory...hardly worth worrying about. I genrally run 4 to 6 psi, bepending on terrain. Im not sure if this is completely factual but it has been my experience that painted steel wheels seem to blow less beads than Chrome or aluminum wheels at low psi's.

Mike


10" rims to what tire size?
Title: Re: Educate Me (wheel and tire tech)
Post by: DirtDevil on March 01, 2005, 05:49:22 AM
i wish i could find some skinnyer rims!, right now im sittin on 32x7 16" tube type bias plys, and the skinnyest rims I could find were 6.5" wide, the only other rims i could think of to look for were stock willys jeep rims, but where does one find a set of those  ???
I havent tryed airing down my tires yet, havent had a chance, but im expecting bead probs
Title: Re: Educate Me (wheel and tire tech)
Post by: TinTopper on March 01, 2005, 08:51:22 AM
Quote
i wish i could find some skinnyer rims!, right now im sittin on 32x7 16" tube type bias plys, and the skinnyest rims I could find were 6.5" wide, the only other rims i could think of to look for were stock willys jeep rims, but where does one find a set of those  ???

RockCrawler regular black steelies are what my 16x5.5's are... With that skinny of a tire, does the tire manufacturer recommend a particular brand of rim or anything? They should know where to get the right size.
Title: Re: Educate Me (wheel and tire tech)
Post by: DirtDevil on March 01, 2005, 11:36:48 AM
i wouldnt know, 2 of em say "registered 1955" on the side walls ;D ... 2 are fire stone and 2 are early bfg's
Title: Re: Educate Me (wheel and tire tech)
Post by: Mtn. Goat on March 03, 2006, 04:49:24 AM
Title: Re: Educate Me (wheel and tire tech)
Post by: Uncivilized on March 03, 2006, 06:39:03 AM
You could always check the manufacturers recommended rim width for your specific tire size  :D
Title: Re: Educate Me (wheel and tire tech)
Post by: AJMBLAZER on March 03, 2006, 06:10:01 PM
Title: Re: Educate Me (wheel and tire tech)
Post by: wildgoody on March 03, 2006, 09:59:42 PM
I like a thinner wheel, I run 8" with a 2.5 backspace
RockCrawler with a 33-13.5 Swamper LTB.

Title: Re: Educate Me (wheel and tire tech)
Post by: mrfuelish on March 03, 2006, 10:14:15 PM
What you guys don't have six sets of tires and wheels?  It gets to be a pain changing them all the time so I picked up three more suzuki's it's easyer that way.  ;D
Title: Re: Educate Me (wheel and tire tech)
Post by: cj on March 04, 2006, 12:04:06 PM
i wish i could find some skinnyer rims!, right now im sittin on 32x7 16" tube type bias plys, and the skinnyest rims I could find were 6.5" wide, the only other rims i could think of to look for were stock willys jeep rims, but where does one find a set of those  ???
I havent tryed airing down my tires yet, havent had a chance, but im expecting bead probs

Have a hunt for some old Suzuki LJ rims. They had a skinny 16". I'm now running some skinny 7.50x16" (32") on some Sport 6.5" rims and they great but then again I have some internal pneumatic beadlocks so I can run 0 psi and won't pop a bead  8) The Problem I've had in the past wasn't so much popping a bead but rolling it enough to get mud etc. in there and I regularly ended up with a slow leak.
Title: Re: Educate Me (wheel and tire tech)
Post by: stevec on April 06, 2006, 10:00:12 AM
The LJ rims were 16x4.5's, but they're very hard to find.  Old Jeep rims are the same size, and much easier to find.  The only real difference is the LJ rims have an extra hole for adjusting the brakes.