225/80r15 tyres

wrote:

There's no hard and fast rule on this, it's down to the manufacturer of the tyre in question to stipulate the minimum and maximum wheel size for each size and model of tyre they provide. They are supposed to publish this information under law but it's invariably very well hidden.

The BFG site is quite good for this (the US one, not the UK one).

I've never really seen tyre makers have different rim specs though for a given tyre width. I'm not saying you shouldn't run wider than recommended, but it should be done so with the knowledge that you are probably breaching Construction & Use regulations and that to the strictest letter of the law it could make you vehicle not fit for road use and also cause potential issue with insurance should you be in an RTA/RTI.

Chances are remote that it would be an issue. But the possibility would always be there.

Roger, those sound like the generic figures given for standard and low profile tyres. With the tall sidewall of the tyre size in question it will safely fit a lot broader range of rim sizes. Also for off-road use it is preferable to keep the rim width as narrow as possible to protect the bead and the sidewall. As an example, BFGoodrich reccomend a 6"-7" rim for their 235/75r15 tyres.
From experience, tyres as wide as 10.50 (260) are fine on the standard 5.5 rims.

wrote:

wrote:

There's no hard and fast rule on this, it's down to the manufacturer of the tyre in question to stipulate the minimum and maximum wheel size for each size and model of tyre they provide. They are supposed to publish this information under law but it's invariably very well hidden.

The BFG site is quite good for this (the US one, not the UK one).

I've never really seen tyre makers have different rim specs though for a given tyre width. I'm not saying you shouldn't run wider than recommended, but it should be done so with the knowledge that you are probably breaching Construction & Use regulations and that to the strictest letter of the law it could make you vehicle not fit for road use and also cause potential issue with insurance should you be in an RTA/RTI.

Chances are remote that it would be an issue. But the possibility would always be there.

The in sewer ants would probably try it on if you have anything other than factory spec if you haven't told them as they just love to find a way out of paying a claim. It's part of the reason I don't have a massive amount of modified parts on Temeraire, because even when notified those you oily swine will try anything.

The info. I have given was taken from a Goodyear booklet entitled "Light truck, van and 4x4 tyre data and maintenance" and is based on info. from the "Tire and rim association standard".
Tyre manufacturers will specify the recommended rim size and also the permitted rim size. If these limits are exceeded then the tyre tread will attempt to conform to the designed tread pattern and this will cause unnatural and dangerous wear patterns to emerge. The relationship between tyre width and rim size is part of the design and is paramount to the safe use of the tyre.

Roger

The relevant body that we are under is etrto the European tyre and rim technical organisation which is useful to know of itself but also a little pointless as it's a trade members only body not a public one unfortunately.

Charter Boat is probably confused that there are so many people giving him different answers to his question, so I would suggest he asks Suzuki to give him a definitive answer to the suitable sizes for his rims.

CustomerServices@suzuki.co.uk

Roger