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**Sunny43.5** · 03-09-2012, 10:30 PM

Hi Foxpuppet it was a couple of years ago so the size of the tyres escapes me but I do DISTINCTLY remember that the ride was much harsher giving a jolting ride except for the best of bitumen surfaces , you could feel almost every small lump on the road and depending on road surface they were noisier . The van has stock suspension and with standards tyres back on the transformation was incredible , for myself never again . As I said in an earlier post I fit sunroofs for a living and repair as well and without fail the highest number of complaints I get from owners of factory fitted sunroofs and aftermarket sunroofs is rattles and noises and I can always say without fail its the cars with low profile wheel and tyre combinations are the biggest culprits , and its not just the hoon mobiles its cars that cost well over $60.000 plus that are built that way from factory that have issues . And then there is the tyre air pressure that is a contributing factor . I also like the look of a low riding car van but there is nearly always a trade off for this "look" I just wet myself laughing at some of the cars you see the drivers speed around and then come to a screaming stop at the first sign of a speed bump .

Originally posted by Foxpuppet View Post

what size rim and tyre combo did you have sunny? was it the discomfort,noise,handling or something else?
i am pretty happy with my choice... haha that being said i still have not even driven with them yet

55mm of rubber is fairly standard and should not be too bad. i dont know how these guys in the uk run 22" with 35 profile... madness!

**Diesel_vert** · 04-09-2012, 02:16 AM

Originally posted by vert1 View Post

I run 18" wheels on my van with a 235/45/18 tyre... Tyres are Hankook Evo12 with a 102 load rating

Originally posted by mikinoz View Post

I have the same 235/45/18 as above but have KU19 Kumho that are 103W load and speed rated for the Multivan.

A 235/45 R18 passenger tyre has a load index of 94 (standard load) or 98 (extra load/reinforced).

A 235/45 R18 passenger tyre with a load index of 102 or 103 doesn't exist, nor is there such thing as a 235/45 R18C commercial tyre.

Originally posted by vert1 View Post

... which on paper at least is the same rolling diameter as what the van had stock (215/65/16 from memory) Actual comparison makes the 235 a little smaller in height (about 5mm) and if I were to buy tyres again I'd go for a 245/45/18.

The correct fitment is 255/45 R18 103Y XL.

The load index (and hence load capacity) of a 245/45 R18 100Y XL or 235/45 R18 98Y XL tyre is too low.

Load index has priority over rolling circumference, in terms of safety, roadworthiness & liability.

**vert1** · 04-09-2012, 05:55 AM

Originally posted by Diesel_vert View Post

A 235/45 R18 passenger tyre has a load index of 94 (standard load) or 98 (extra load/reinforced).

A 235/45 R18 passenger tyre with a load index of 102 or 103 doesn't exist, nor is there such thing as a 235/45 R18C commercial tyre.

The correct fitment is 255/45 R18 103Y XL.

The load index (and hence load capacity) of a 245/45 R18 100Y XL or 235/45 R18 98Y XL tyre is too low.

Load index has priority over rolling circumference, in terms of safety, roadworthiness & liability.

What you are saying then is that the manufacturer is wrong and their specs in their books are wrong?

I should add however that if you are loading your van to the max (which I never will) then passenger car tyres will not work.
The tyres I have can do a max axle load of 1.5 tonnes.

**Diesel_vert** · 04-09-2012, 03:50 PM

Originally posted by vert1 View Post

What you are saying then is that the manufacturer is wrong and their specs in their books are wrong?

You've either misquoted the size or the load index of your tyres

Otherwise, take a photo and prove me wrong.

Originally posted by vert1 View Post

I should add however that if you are loading your van to the max (which I never will) then passenger car tyres will not work.

It doesn't matter whether it's a passenger or commercial tyre, as long as one ensures the load index (and hence load capacity) is equal to, or exceeds that of the vehicle manufacturer's original fitment (recommended) or exceeds the vehicle's gross axle weight (at the very least, as a bare minimum).

Also, the Land Transport Rule: Tyres and Wheels 2001 (NZ) says:

2.3 General safety requirements for tyres

2.3(10)

The sum of the load ratings of the tyres fitted to an axle of a motor vehicle must be
equal to, or greater than, the maximum load that is specified on the certificate of
loading for that vehicle, taking into account the speed at which the vehicle is being used.

... and...

2.3(12)

The laden weight on any axle of a motor vehicle must not exceed the sum of loads that
are allowed for the tyres fitted to the axle, taking into account the speed at which the
vehicle is being used and the pressure to which the tyres are inflated.

I'm not entirely familiar with the legal situation in NZ, but that would look pretty convincing in front of a magistrate (if it were to go that far), and I bet there is no jurisdiction amongst the OECD countires that would allow the fitment of tyres with a maximum load capacity per axle which is less than that of a motor vehicle's gross axle weight.

Originally posted by vert1 View Post

The tyres I have can do a max axle load of 1.5 tonnes.

Um... okay...

A load capacity of 1500 kg per axle is 750 kg per tyre, which equates to a load index of 98, which would confirm what I said earlier...

**mikinoz** · 05-09-2012, 06:44 PM

Originally posted by Diesel_vert View Post

A 235/45 R18 passenger tyre with a load index of 102 or 103 doesn't exist, nor is there such thing as a 235/45 R18C commercial tyre.

My mistake, I actually have 255/45 R18... Which do exist.

**Diesel_vert** · 06-09-2012, 09:39 PM

Originally posted by mikinoz View Post

My mistake, I actually have 255/45 R18... Which do exist.

That sounds right.

Was rather concerning thinking you'd fitted 235/45 R18 tyres.

**Foxpuppet** · 14-09-2012, 07:54 AM

well after a little delay (wheels did not arrive to performancealloys from ronal in germany for about 3-4 days) they have arrived just this morning and i am so excited

gotta say DHL worldwide has very good tracking... and they have been on a whirlwind trip around the world to get here, but they arrived at and were then sent out from P/alloys on monday arvo our time and arrived here at 7am so it's pretty quick for wheels in stock, but not if they have to order them in. still it was worth the wait not to have CSA's

now off to the tyre shop on the weekend to get some MA-P1 fitted and we will be in business - STOKED