Staggered 20’s..?

[Tourershine]

The tyre pressure monitoring can be set to overcome the difference in rolling radius, but the abs and esp will still be affected as the van will think that the front wheels are turning faster than the rears, possibly reducing power in an attempt to stop what it considers to be wheel spin.

You'd assume this would have to be a drastic difference between front and rear because staggered sizes are very common, including myself running the same size tyres front to rear, but a difference in 1.5" widths between the rear wheels and the fronts, theoretically giving a difference in rolling radius between my rears and my fronts with no adverse effects.

 

[dubber36]

Maybe none that would be apparent, but there could be effects all the same.

I tried an experiment once with a previous Passat. It always got a fair amount of brake dust on its rear wheels. Even on a regular 200 mile motorway journey with virtually no braking, the rear wheels would be quite dirty. I tried it one time with the esp turned off. The result, the usual amount of dust on the fronts and hardly a spec on the rears.

These electronics are doing their thing all the time behind the scenes, so I think altering the parameters can only cause them confusion.

 

[Dieseldonkey]

The tyre pressure monitoring can be set to overcome the difference in rolling radius, but the abs and esp will still be affected as the van will think that the front wheels are turning faster than the rears, possibly reducing power in an attempt to stop what it considers to be wheel spin.

Yip. This was my thoughts. When you corner every wheel turns at a different speed. The difference in each wheel will be relative to the input from the steering angle sensor. Having a different rolling radius may take the wheel rotation inputs out of tolerance. So the ECU may think a the vehicle is in a understeer/oversteer/slide/loss of traction state. I stress the word MAY though. Theres obviously a certain degree of tolerance inbuilt, to deal with unequal tyre pressures.

That's certainly my understanding, from when I had study this stuff, back the day.

 

[Richie15]

Thanks for all replies. Tempted to stay as is. I already have H&R anti roll bars fitted. My B14s are at the highest setting at the front to avoid rubbing esp on the passenger side which is worse than driver side for some reason, I have no rubbing at the minute. My theory is that the B14s would give a better ride if lower hence the thought process. I think I have c20mm to play with on the rear so if I reduce the front tyres to 275/35 then the difference could mean I could drop both by the same.

 

[Pauly]

Define - 'better ride'

Lower = firmer/stiffer
Personally i think better = softer, in which case i would keep them up

 

[Skyliner33]

Define - 'better ride'

Lower = firmer/stiffer
Personally i think better = softer, in which case i would keep them up

It's not quite that simple the dampers also have to be considered. The dampers do not work at their optimum at either end of the adjustments, but best in about the middle of their travel.

 

[Vdubcuz]

45 profile on the front of mine and 40 rears.
Bit of travel left on the B14s and the ride is super comfy but still firm.
No tyre pressure or any other issues in 20k since I’ve had it.

 

[Richie15]

Thanks for the shots. Did you mean you have 275/35/20 on front and 275/40/20 on back?

 

[Vdubcuz]

Thanks for the shots. Did you mean you have 275/35/20 on front and 275/40/20 on back?

245 45 20 on the front, 275 40 on the rear on a staggered set up.

Had to go 45 profile on the front to ensure load rating.

 

[Dieseldonkey]

@Vdubcuz 's combination gives near identical rolling circumference front and rear.

Whereas what @Richie15 is proposing, gives a difference in rolling circumference of 87mm !

 

[Richie15]

Once again thanks for replies this is interesting. So coming back to what I am trying to achieve which is to lower the front without changing the rears then 245/45/20 are an option as the tyre won’t stick out as far and therefore won’t catch as much on the wheel arch rim (fitting inside) which means it does the job.

@Vdubcuz I assume you are inside your arches?

 

[Vdubcuz]

Once again thanks for replies this is interesting. So coming back to what I am trying to achieve which is to lower the front without changing the rears then 245/45/20 are an option as the tyre won’t stick out as far and therefore won’t catch as much on the wheel arch rim (fitting inside) which means it does the job.

@Vdubcuz I assume you are inside your arches?

Hi Richie, you need to look at the ET rating as well (the offset of the wheel from the hub), thats what pushes the wheel further towards the outside of the arch.
My last set where ET 35 on the fronts and occasionally it caught on the small torx screw on the arch liner.
These are ET38 on the front.
.

 

[Pommie Dave]

Hi guys,
I am just about to order a set of rims for my new T6 from Koya.com.au down here in Brisbane Australia. I have chosen the SF08 19" semi forged. They manufacture their own and so I know they are going to ask me specifics as they normally do cars and therefore won't have a listing for VW T6.
I am not overly worried about van rated as the heaviest thing I carry is my wallet.
The details they list are. 19". PCD. OFFSET
F 8.5"S 5H98-130. +15 - +45.

R 9.5"C. 5H98-130. +15- +46


Does anyone out there know the answers to the questions I am going to be asked?
I am fitting B14's at the same time.
I have gone 19's so hopefully it doesn't ride like a cart.
I fancy going the staggered.
Can anyone recommend tyre size please?

 

[Richard f]

It does not matter what you are carrying the wheels have to be rate for the load it can carry so your insurance will be void

 

[Snoopster]

So finally made a decision on wheels for my T32, I have gone for a 9J front 10.5J rear, looking for advise on what tyre size would be best, a 275/40/20 or a 265/40/20?

many thanks

 

[JPL]

@BognorMotors

these guys- although trawling through the search menu will probably give you what you need.

 

[t6 soon]

265/40/20 goodyear eagle f1 on tyre leader at moment £127 each seem a popular choice

 

[Damon]

What's on the market that's load rated for a caravelle. I like inovit turbines but they don't meet the load rating requirement. I like the concaved look

 

[Jayjmac]

Try here..

Wheel Identification Thread

Please post your wheel pictures including the name and size so we can compile a reference. If possible also include the weight range etc. Please try and post a side on shot like the first 2 examples. This topic will be tidied up weekly

www.t6forum.com

 

[Jayjmac]

Just trying to dig out more..