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I am pretty sure the diameter of the michelin XZL (optional/original fitment on 110s/130s) is about 820-830 mm or so.Quote:
Originally Posted by rar110
My IIA has 285-75s and it has gone through several inspections (RWC/transport/police) at various times in 2 different states and nothing has been mentioned. I don't know of anyone who has had (legal) issues having 33's on a series/110.
If and when the NCOP comes in, the rule will increase to +50mm for 4x4s.
I measured Col Coleman's XZL's one day and they were shorter than my Faulken AT 235/85's.Quote:
Originally Posted by isuzurover
You are right - you would be dead unlucky to get pinged for having 33s on a series/110.
The change would reflect reality a bit more than the current rules.
Yeah, but remember that the size variation is from the biggest tyre that the manufacturer chart recomends, not the tyre neccessaarily fitted to the car now or as standard.
And where do you get that size from??? The mathematical size is not the actual size. The "Tyre and Rim Standards Association" publish a manual of standard sizes, however there is a standard for road and offroad - so which one do you pick for a landie???Quote:
Originally Posted by CraigE
I have asked similar questions to QLD transport and received vague answers - which I suspect is the reason that the powers that be aren't keen on hassling anyone who is just over the 15 mm rule.
I'm pretty sure it's based on the nominal sizes listed on the placard though some push for sizes used by the manufacturer on that model but not necessarily on that placard (ie specials).
285/75/16's as standard ROCKCRAWLER.com - SEMA Show 2003 - Land Rover Defender 110 CKD
order your kit now.....................
That could be how LR can continue building the Deefa......as a home built kit :DQuote:
Originally Posted by jimbo110
Yep well there you have it, factory fitted 285 75x16's.
I think they look good but Im not convinced in normal 4wding that tyres that big are all that nessesary but if you get a bit more serious into it then yes you need them.
There is a heap of contradictory data in this thread re fat vs skinny and I think in the end it comes down to what you use your 4wd for and where you want to get.
If you want them just for the look then I dont think it is the best thing to do as they do effect stopping distances, control and acceleration as well as economy but again thats just my opinion.
I run 235 85 16 on my Disco, I would probably go a bit bigger if I ran flares but i wouldnt really go over 265 75 16 Silverstones.
I think 33's are pretty acceptable though, 35's Simex's look great but are too big and as they are designed as truck tyres and in reality they over tyre a LR (as the compund and construction is designed for a 6 to 8 tonne truck not 2 to 3 tonnes of 4wd) drive terrible on any surface other than Mud and the others Ive had no experience with so I wont comment.
i agree with that, even though i have 285's. they look good and they take me where i want to go and are cheapish compaired to other brands. ive run LRH's JT2's on the 90 and they are horrible on road and in reality i dont think that the differance between the 33's im running and the 35's of his really make any differance to where i go. different story if it was a comp truck.
cheers phil
:eek:Quote:
Originally Posted by mcrover
Why do you say that?
None of the Simex's are load rated for a vehicle that heavy. They're almost all very plain in the load rating for a 4WD tyre. The size range are also very much 4WD sizings.
Here are the ratings:
Dynamic 4x4, Simex 4x4, Sime 4x4, General tire, Dynamic Wheels, Sime, Grabber, Extreme Trekker, Wheels
Speaking to WA RTA a while back if you go over the margin allowed (-25mm +15mm I think) on the placard affixed to your vehicle you can be booked and an unroadworthy sticker placed on your car and depending on the copper can be a red one (here in WA) if they want as the vehicle is deemed to be unsafe to drive.Quote:
Originally Posted by isuzurover
The standards have absolutely nothing to do with a particular vehicle. It is a guide for manufacturers and once the manufacturers recomendations are placed on a vehicle these must be abided by without an engineering exemption.
There are some real grey areas in this issue. Technically you can be booked for anything other than manufacturers reccomendations.
It would be rare to get booked for having slightly larger tyres on a 4x4, however I have seen it done and a canary placed on the car.
I know with Holden Commodores / Statesmans depending on what year you buy say 1995-2006 the placards vary. Earlier models only list 16" wheels and tyres while later models list 16-17" or 16, 17, 18". Now they are all very similar, but try buying a set of new mags in 16" to suit a late model Holden. Generally all you can get is 17-18". I know as we have been looking.