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16x6.5 rim vs 15x8in rim - tyre choices

Posted: Fri May 11, 2007 12:35 pm
by Tzi
I currently have 15x8 sunrasia rims on my feroza, and they look great. My only problem is, being 15in rims... the supply of 2nd hand 15in tires is scarce.

I have just found a set of alloy rims off a vitara for a very nice price, which are 16x6.5in which would mean i could go into almost any tire shop and pick up a set of 2nd hand 4x4 tyres very easily

My question is... is a 6.5in wide rim going to be a problem if i want to fit 9in or 10in wide tires? :?



edit:
15x8JJ - off a F100, unknown offset, but the rims are level with the arches
16x6.5JJ - 25 offset

Posted: Fri May 11, 2007 2:09 pm
by *BESTY*
Why would you want second hand tyres ???????????


15" tyres are cheaper new and I didn't think they were scarce.

If you spend your money on getting new tyres rather than new rims, Your Feroza's diff and gearbox will thank you for it.......for not having two tyres with slightly different rolling diameters causing wind up with increased potential to break CV's / Axles.

Posted: Fri May 11, 2007 2:18 pm
by Tzi
*BESTY* wrote:Why would you want second hand tyres ???????????

You'd be amazed how many people will do something silly... like take off a 1/2 used set of All terrains and buy mud terrains, leaving the perfectly good A/T's at the tyre place.
The last set cost me under $100... the problem is finding them in 15in!!! :roll:

Posted: Fri May 11, 2007 9:12 pm
by X90
16x6.5JJ - 25 offset will be a great rim for Your rig. Why? The same diameter tire will be lighter comparing with 15" rim version. That's important in IFS vehicle. Also, there's a lot of cool tires sizes on 16", i mean high and narrow. You may try 235/85/16 instead 31/10.5/15 - in my opinion this will be better.

Posted: Fri May 11, 2007 9:38 pm
by Tzi
cool thanks....can you explain why its better for ifs?

Posted: Fri May 11, 2007 10:19 pm
by mrRocky
if you let them down in the sand this may be an issue popping the bead of the rim with 6.5. unless u run 8", or 9" tyres. no chance of fitting a 10.5 tyre on a 6.5 rim me thinks

Posted: Fri May 11, 2007 10:21 pm
by X90
IFS is not as though as Solid Axle is - that's why lighter wheel is better. 16" rim means less rubber than in the same diameter tire on 15" rim. Also most 15" tires are Full Floation sizes - wide, like 31/10.5/15 or 33/12.5/15. You don't need so wide tires in light Feroza, but they will put more stress on whole drivetrain and "eat" more power. Feroza on 235/85/16 will be VERY off road capable, yet You will have enough power to drive it on road with no problems.

Posted: Fri May 11, 2007 11:04 pm
by murcod
X90 wrote:Feroza on 235/85/16 will be VERY off road capable, yet You will have enough power to drive it on road with no problems.
You do realise that's equivalent to a 32" tyre? No matter what your width/ rubber to wheel ratio/ whatever- it will still dramatically change your gearing and kill low range and on road acceleration.

Posted: Fri May 11, 2007 11:26 pm
by X90
Narrow 32" won't be worst than 31/10.5/15. Everyone have to choose what does he like, that is only my opinion :)

Posted: Sat May 12, 2007 6:38 am
by r0ck_m0nkey
X90 wrote:Narrow 32" won't be worst than 31/10.5/15.
Considering gear ratios, then yes it would be regardless of width.

Posted: Sat May 12, 2007 10:56 am
by HotFourOk
*BESTY* wrote:Why would you want second hand tyres ???????????
x2.... Put the money from the new rims towards some new tyres for your 15" rims.

I thought 15" sizes were the most common 4x4 tyre ever?

You cannot put a 10" wide tyre on a 6.5" rim.. it would be dangerous and it would look funny :D
The offset also seems a LOT less, so your track will be decreased too.

If you go 4x4ing, alloy rims can be broken more easily then a steel rim.
Especially in a 16" rim, you have less rubber protecting it, and less tyre to bag out under low pressures.

Posted: Sat May 12, 2007 12:44 pm
by Tzi
HotFourOk wrote:Put the money from the new rims towards some new tyres for your 15" rims.
$165 for a set of rims... thats not even gonna get 1 new tyre
You cannot put a 10" wide tyre on a 6.5" rim.. it would be dangerous and it would look funny :D
The offset also seems a LOT less, so your track will be decreased too.
now thats something i dont want... my feroza has always been very floaty to drive at higher speeds... after putting on the 8in rims with the much wider offset, i increased the track nearly 2in... making it MUCH more stable... i dont really wanna go back to the way it was. :?
If you go 4x4ing, alloy rims can be broken more easily then a steel rim.
Especially in a 16" rim, you have less rubber protecting it, and less tyre to bag out under low pressures.
Yep... alloys are definitly not for me then :armsup:

Posted: Sat May 12, 2007 5:25 pm
by RockyF75
Tzi wrote:
HotFourOk wrote:Put the money from the new rims towards some new tyres for your 15" rims.
$165 for a set of rims... thats not even gonna get 1 new tyre
Maxxis have a pretty aggro mud pattern tyre for around this price, good value if they are not going to mostly offroad tyre.

Posted: Sat May 12, 2007 10:02 pm
by X90
If you go 4x4ing, alloy rims can be broken more easily then a steel rim.
Especially in a 16" rim, you have less rubber protecting it, and less tyre to bag out under low pressures.
You're right, but anyway, my Pal is using stock 15" alloy rims in vitara with 235/75/15 tires and although he's doing what he can do destroy this car, rims are still ok. Steel rims are usually tougher and easier to repear in any workshop, but it doesn't mean alloys are uselles in off-road driving.

Posted: Sat May 12, 2007 10:13 pm
by rOd
The likely hood of breaking CVs and front diffs are probably greater than damaging alloy rims.

Posted: Mon May 14, 2007 7:35 am
by MightyMouse
6.5" rims are a bit narrow to take many tyres, from what I can see not suitable for 10.5 wide. There are some tall and narrow around but their perhaps not an ideal tyre for a daily driver.

and 32's on a Feroza woudl be a bit useless in the gearing department, I am not sure what people call hardcore 4WD but a roza on 32's won't have the gearing to do my version of medium let alone hard.

Its the Achillies heel of Feroza's, cant get the gearing right because of the lack of t case ratios.

Posted: Mon May 14, 2007 9:29 am
by Tzi
cant agree with you more... Even with the stock rims, Low was just never low enough... but there's always the clutch :roll:

Posted: Mon May 14, 2007 6:09 pm
by HotFourOk
Tzi wrote:but there's always the clutch :roll:
Down hills you will have fun then :rofl: :D

Posted: Mon May 21, 2007 10:14 pm
by cj
Tzi wrote: $165 for a set of rims... thats not even gonna get 1 new tyre

Yep... alloys are definitly not for me then :armsup:
Is that the cost for the set of alloys? I'll buy them for my Vitara. PM me details.

CJ

Posted: Mon May 28, 2007 9:27 am
by Tzi
yep... sent email

Posted: Mon May 28, 2007 10:25 am
by cj
Got the email. Thanks for the help.
CJ

Posted: Thu May 31, 2007 12:23 pm
by cj
Got the alloys yesterday. Thanks Tzi for the details.

CJ

Posted: Thu May 31, 2007 12:34 pm
by lay80n
Tzi wrote:cant agree with you more... Even with the stock rims, Low was just never low enough... but there's always the clutch :roll:

WTF, using the clutch to crawl is retarded. First you root your clutch straight up. Second, as you attempt to climb, say out of a rut, whilst slipping the clutch, you hit the lip and the extra load on the drive train causes the car to stop, as the clutch is not fully released and allows the slip there. Get your foot of the clutch and drive properly.


Layto....

Posted: Thu May 31, 2007 9:54 pm
by ferris
just put 16 x 7 in f100 rims on ,new sunraisers with 245 /75/ 16 on my rocky ute. looks tops and they fit on my feroza to $100 per rim new .rocky utes come standard with 16x4.5 rims . i did this because you can get more 16in tires than 15 in as 16 in is standard on all new trucks.
vitara rims not enough off set for rocky they hit the spring hangers.just swapted to f100 or f150 .