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Factory tyre sizes

Tech Talk for Suzuki owners.

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Factory tyre sizes

Post by JrZook »

Ok I would like straight answers, no try and search rubbish please (yes ive tried). Ive been chatting to an engineer up here in FNQ. Now what i would like to know is - what was the biggest tyre size that came out factory on any suzuki sierra diffs, LWBs utes maruriti etc.

Thanks for your help, Dan
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cj
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Post by cj »

6.00-16
[quote="4WD Stuff"]
I haven't quoted Grimbo because nobody takes him seriously :finger: :finger: :finger: :finger: [/quote]
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Post by Zook_Fan »

and that is on LWB's
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Post by JrZook »

cj wrote:6.00-16
Do we know what that roughly equates to in inch?
Cheers for the reply
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Post by Zook_Fan »

the pair i have are slightly taller than 235/75's so around 30"
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Post by Zook_Fan »

no sorry bit more research says they are exactly 28".

16" rim and the 6 stands for width and height of side wall, so

16 + 6 + 6 = 28"
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Post by grimbo »

JrZook wrote:
cj wrote:6.00-16
Do we know what that roughly equates to in inch?
Cheers for the reply
bogged from elsewhere

"Old" tyre dimensions are in inches, e.g. 6.00 x 16. The tyre carcass width and height are both 6", so there is no need to specifiy an aspect ratio (it is 1.0), and the overall tyre diameter is 2 x 6 + 16 = 28", in this case.
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Post by mrRocky »

My 96 1 ltr w/t stockman came with the original spare tyre unused underneath the tray specs are

MRF Estate F78-15LT
94L 4 ply rating
35psi max

Its oldschool chunky and looks pretty cool, must have been a special order or something, i brought it of a farmer/1 owner with 130,000
delivery papers and dealership service history, probably the biggest standard tyre ive seen on a gooki oh and i paid 3k just to rub it in.
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Post by cj »

grimbo wrote:
JrZook wrote:
cj wrote:6.00-16
Do we know what that roughly equates to in inch?
Cheers for the reply
bogged from elsewhere

"Old" tyre dimensions are in inches, e.g. 6.00 x 16. The tyre carcass width and height are both 6", so there is no need to specifiy an aspect ratio (it is 1.0), and the overall tyre diameter is 2 x 6 + 16 = 28", in this case.
And that's why you can't trust the internet ;) They're actually a 29" tyre. Go to a tyre shop and ask to look in the tyre and rim manual for the nominal OD. You'll find two sizes listed, a highway size and a traction (mud tyre) size which will be bigger, that's the measurement you need.
[quote="4WD Stuff"]
I haven't quoted Grimbo because nobody takes him seriously :finger: :finger: :finger: :finger: [/quote]
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Post by Jock »

mrRocky wrote:My 96 1 ltr w/t stockman came with the original spare tyre unused underneath the tray specs are

MRF Estate F78-15LT
94L 4 ply rating
35psi max

Its oldschool chunky and looks pretty cool, must have been a special order or something, i brought it of a farmer/1 owner with 130,000
delivery papers and dealership service history, probably the biggest standard tyre ive seen on a gooki oh and i paid 3k just to rub it in.
Early sierras had these as standard fitment
F78-15 or FR7815. They equal the same size as a 205/70R15.

This is the old alpha numeric tyre sizing system. Very outdated and hardly used anymore.

The F is the tyre load capacity
The R or B or no letter of it indicates a radial tyre or not
The 78 is the aspect ratio
the 15 is the rim size

The letter wasn't constant either. as it was based on carrying capacity and not width so it is a very confusing system

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When was the last time you correctly spelled a motor into a car? The people that should stay away from spanners are pedantic English teachers & keyboard spelling nazi's.[/quote]
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Post by mrRocky »

how early ? mine was 96 dealer delivered i would say thats late model as far as leaf sprung sierras go
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