MINESAPINT Posted February 28, 2008 Share Posted February 28, 2008 I bet you thought this would be what do all the numbers refer to? Wrong! I asked that a couple of months ago. My 235 85 R16's on a tyre calculator indicate a diameter of 80.59cm and circumference of 253.18cm. Are the sizes based on a new tyre and includes the tread or are they the carcass size and any tread would add extra diameter & circumference or other? Additionally does anyone know what tread depth new BFG All terrain 235 85 R16's would have. Thanks MINESAPINT Quote Link to comment Share on other sites More sharing options...
Lars L Posted February 28, 2008 Share Posted February 28, 2008 Remember that these dimensions are nominal, for exakt measurements of a specific tyre, you'll have to check with the manufacturer. I can't imagine that the dimensions are nothing but the "complete" tyre... Quote Link to comment Share on other sites More sharing options...
q-rover Posted February 28, 2008 Share Posted February 28, 2008 Again like Lars said the sizes are based on an industry norm, but the actual dimensions of a tyre in the same size can vary from manufacturer to manufacturer. Also the sizes will be for an unladen tyre, ie not fitted to the vehicle. Especially remooulds can be physically a lot larger for a given dimension than a new tyre. Quote Link to comment Share on other sites More sharing options...
MINESAPINT Posted February 28, 2008 Author Share Posted February 28, 2008 Thanks Lars & GRover. I am sure there must be a standard and at this stage I am guessing it is something to do with the carcass. Guessing again: That is why remoulds end up oversize because more rubber has to be added (to a particular size of carcass to make it durable enough). Hence it is oversize. Please note I don't mind if I am talking B*((*$ks I happen to have an enquiring mind and hope someone will be able to quote chapter & verse. Thanks MINESAPINT Quote Link to comment Share on other sites More sharing options...
SteveG Posted February 28, 2008 Share Posted February 28, 2008 While lr4x4 is full of useful information, in this case all you need to know is here.. http://www.bfgoodrichtires.com/specs/all-t...-t-a-ko/44.html Quote Link to comment Share on other sites More sharing options...
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