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Old 14 June 2008, 18:27   #11
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well that was my thought, I didnt think 5mm would make a big difference except when 4wd was engaged,..
Naaah! It's a tyre section with 5% (10.3mm) difference in section height therefore 20.6mm increase in diameter therefore 20.6 x 3.142 difference in circumference. That's almost 65mm scrub on each wheel revolution! If the transfer case has a differential, viscous coupling or some other clever device, it'll be working full time.
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Old 15 June 2008, 04:58   #12
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Well my Kia only has two diffs, one front and rear, not on the transfer box like some 4x4's have. So that being the case then two different tyre sizes front to rear would make it work too hard.
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Old 15 June 2008, 05:46   #13
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Naaah! It's a tyre section with 5% (10.3mm) difference in section height therefore 20.6mm increase in diameter therefore 20.6 x 3.142 difference in circumference. That's almost 65mm scrub on each wheel revolution! If the transfer case has a differential, viscous coupling or some other clever device, it'll be working full time.
You know I thought there would be some bizarre maths like that, which I casually ignored
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Old 15 June 2008, 06:55   #14
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Well my Kia only has two diffs, one front and rear, not on the transfer box like some 4x4's have. So that being the case then two different tyre sizes front to rear would make it work too hard.
So how does it distribute the drive front and rear?
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Old 15 June 2008, 07:19   #15
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You know I thought there would be some bizarre maths like that, which I casually ignored
and it's actually worse than that because it's the rolling radius which matters. So I cheated a bit.
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Old 15 June 2008, 07:21   #16
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So how does it distribute the drive front and rear?
It's got a transfer box, it's just that there's no diff in there.
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Old 15 June 2008, 08:18   #17
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if you are thinking of selling then put cheap ones on

if you are going to keep then go for ones reasonably prices, reasonable tread pattern and match the other two. dont go for too big a block pattern if you dont want loads of road noise

i doubt if the makes you have mentioned are really going to make a lot of difference anyway to be honest in terms of handling and grip as i doubt if it is at the limit so to speak
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Old 15 June 2008, 08:59   #18
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if you are thinking of selling then put cheap ones on
There's a nice Disco down the road and he keeps lowering the price, if only I hadn't had to buy a new trailer

Well I am very limited as I mentioned earlier and have my local tyre fitter pricing up some wrangler AT/R's I would guess they'll be at least 70 each inclusive. But to be honest if I was selling the Kia then I'd have to buy new tyres anyway as the ones on there are very on the limit.
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Old 15 June 2008, 18:51   #19
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There's a nice Disco down the road and he keeps lowering the price, if only I hadn't had to buy a new trailer

Well I am very limited as I mentioned earlier and have my local tyre fitter pricing up some wrangler AT/R's I would guess they'll be at least 70 each inclusive. But to be honest if I was selling the Kia then I'd have to buy new tyres anyway as the ones on there are very on the limit.
ive had wranglers before and they were fine, mine had white writing on one side and black letters on the other side
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Old 16 June 2008, 14:10   #20
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170 for a pair of Wranglers, does that seem good?
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