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Thread: Tyre help appreciated here

  1. #1
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    Tyre help appreciated here

    I've just bought my first VW a 2012 Transporter 2.0 TDI 140PS and have decided to keep the standard steel wheels and fit some AT tyres as I drive 50% on unmade roads (not serious off road stuff) and 50% tarmac. The way the bus looks is important to me and I like the look of an aggressive tread patterned tyre on steel wheels, like BF Goodrich or General Grabber. I'm going to stick to the standard wheel size 215-65-16 and would like to hear from T5 owners about the down side of running these sort of tyres on tarmac as I don't often see T5's with anything other than van tyres etc.. Part of me thinks it's a bit of a waste fitting these tyres to a non 4 x 4 but I'm sure there will be advantages too, off road especially. I'm hoping the sort of tyres I want can be got with a load rating of perhaps 100 or 101 although the bus will never be fully loaded, in fact the only extra weight is in the wheelchair lift fitted at the back end. I would like to hear from anyone running similar tyres, or anyone with other tyre suggestions. Thanks.

    Edited in this bit. Just been offered some General Grabbers at a very good price but they are 235-70-16. The tyre shop guy assured me they would not rub on full lock but I have my doubts, he said he has fitted these in this size to several T5 owners with no reported problems. Anyone got experience with this size tyre on standard steelies ?
    Last edited by vbull; 08-10-19 at 12:12.
    2012 Transporter T5.1 2.0 TDI-CR 140PS, DSG

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    Can anyone please let me know if G.Grabbers AT3 235/70/16 will rub on the above T5 ? I want to try and get these sorted this weekend if poss.
    2012 Transporter T5.1 2.0 TDI-CR 140PS, DSG

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    No response on here so asked tyre fitters to get in both 225 and 235 G. Grabbers. Went yesterday and 235 were too big on the rear so went ahead and fitted 225 all round. Don't know if all T5's have the same suspension set up as my bus but if they do and your thinking of fitting 235-70-16, save yourself some grief..... The 225's fill the arches well and tried them out on muddy tracks and it was like a different vehicle completely, loads of grip. Certainly not a Range Rover on these tracks but what a difference a decent set of AT tyres has made.
    2012 Transporter T5.1 2.0 TDI-CR 140PS, DSG

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    Quote Originally Posted by vbull View Post
    No response on here so asked tyre fitters to get in both 225 and 235 G. Grabbers. Went yesterday and 235 were too big on the rear so went ahead and fitted 225 all round. Don't know if all T5's have the same suspension set up as my bus but if they do and your thinking of fitting 235-70-16, save yourself some grief..... The 225's fill the arches well and tried them out on muddy tracks and it was like a different vehicle completely, loads of grip. Certainly not a Range Rover on these tracks but what a difference a decent set of AT tyres has made.
    Compared to 215/65R16 tyres, fitting 235/70R16 tyres will raise your gearing by 7.2%. That's a massive increase, so I don't think many people would have even considered fitting that size...at least not after doing the maths.

    To work out the outside diameter of your tyre, add the diameter of the rim in millimetres to twice the sidewall height. For a 215/65R16 tyre, the sidewall height is 215mm x 0.65 = 139.75mm. You then multiple 139.75mm by 2 = 279.5mm. Then add the diameter of the 16" rim in millimetres. ie. 16 x 25.4 = 406.4mm. So the outside diameter of a 215/65R16 tyre is 279.5mm + 406.4mm = 685.9mm

    Similarly, the outside diameter of a 235/70R16 tyre is 735.4mm.

    735.4/685.9 = 1.072

    This means that the outside diameter of a 235/70R16 tyre is 1.072 times the diameter of a 215/65R16 tyre. ie. 7.2% bigger (which raises your gearing by this amount, ie. 7.2% higher gearing).

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    Quote Originally Posted by Big453 View Post
    Compared to 215/65R16 tyres, fitting 235/70R16 tyres will raise your gearing by 7.2%. That's a massive increase, so I don't think many people would have even considered fitting that size...at least not after doing the maths.

    To work out the outside diameter of your tyre, add the diameter of the rim in millimetres to twice the sidewall height. For a 215/65R16 tyre, the sidewall height is 215mm x 0.65 = 139.75mm. You then multiple 139.75mm by 2 = 279.5mm. Then add the diameter of the 16" rim in millimetres. ie. 16 x 25.4 = 406.4mm. So the outside diameter of a 215/65R16 tyre is 279.5mm + 406.4mm = 685.9mm

    Similarly, the outside diameter of a 235/70R16 tyre is 735.4mm.

    735.4/685.9 = 1.072

    This means that the outside diameter of a 235/70R16 tyre is 1.072 times the diameter of a 215/65R16 tyre. ie. 7.2% bigger (which raises your gearing by this amount, ie. 7.2% higher gearing).
    Thanks for that....I think the 225's I went for is acceptable as far as raising the gearing a little, what do you think or have I let myself in for problems down the road at some point ?
    2012 Transporter T5.1 2.0 TDI-CR 140PS, DSG

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    Fitting 225/70R16 tyres instead of 215/65R16 tyres raises the gearing by 5.2%.

    If you can pull away without slipping the clutch too much and pulling top gear isn't too much of a struggle for the engine, I think you will get away with it.

    Also, the VW Transporter is made for carrying quite a lot of weight, so if you normally carry much less than a full load, then that will also help.
    Last edited by Big453; 11-11-19 at 02:51.

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