Thread: yet another wheel/tyre question (for dummies)

Hi Mate
The Rangie alloys do fit no probs,there is a Defender ute in town with them.(rear discs,are your rears drums or discs,could make a difference)
7.50X16 is a normal Landy size,235/85 x16 are similar but not the same.
You have constant 4x4 so its important the spare is the same size as the road tyres.
There could be an issue with the weight loading of the Rangie alloy VS Defender steelie,there is always a healthy debate over it here!!!!
Andrew

The 7.50 x 16's are simply that - seven and a half inches on the bottom, a 16" rim then another seven and a half = 31"

<The 7.50 x 16's are simply that - seven and a half inches on the bottom, a 16" rim then another seven and a half = 31">

I'm confused. I thought the 7.50 here referred to the width (of something - the rim?) not an increase in diameter, which is what I understand you to be saying. Thus a 6.00 x 16 is narrower than a 7.50 x 16. Or have I had it wrong all these years? In addition, I thought the overall diameter, tread to tread, was indicated by the 31" or whatever.

There's an excellent online resource for tyre info at www.carbibles.com/tyre_bible.html (bear in mind that it is American but it does actually mention Land Rovers).

I may have found the reference to it originally on this forum and if that's the case thanks heaps to whoever provided it - it's been quite useful to me.

I believe, that for a 7.50 x 16, the 7.50 refers to the distance in inches, across the tyre tread from shoulder to shoulder. It doesn't really give much of a clue to the rolling diameter as this depends on the profile.

Originally Posted by tin_scratcher

i have a '93 defender with standard steel wheels (the white ones). i am considering putting on a set of range rover alloys - the old ones with 3 spokes from the mid-80's. i tried them on and they do fit on my defender. but i am wondering about offset and what not.

will i have the full turning ability that my landy has now or are the range rover wheels offset deeper into the axle.

The offset on standard Defender (not 130) rims is the same as the D1 and Rangies - 33mm

It is embossed, stamped, or moulded into the rim. On a Defender rim it is, if I recall correctly, near the bolt holes. It will read something like 5.5Jx16x33. The alloy RR rims will have 7Jx16x33 and it is moulded into the edge near the tyre.

Ron

7.50x16 tyres, and all other tyres with this type of labelling - the 16 is the diameter in inches of the rim bead seat, and the 7.50 is the nominal diameter of the tyre section which is circular - in other words both width and height. Nominal rolling diameter is 7.50 + 7.50 + 16, but varies significantly with both tyre construction and tread thickness and depth.

Metric labelled tyres e.g. 235/85/16 have the 235 is tyre section nominal width, the 85 is the % of this that is the tyre section height, and the 16 is the rim bead seat diameter. If there is no % label, for a radial tyre it will be 85%. So the nominal rolling diameter in inches will be (235/25.4)*0.85 + (235/25.4)*0.85 + 16.

John

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Originally Posted by tin_scratcher

i am considering putting on a set of range rover alloys - the old ones with 3 spokes from the mid-80's.

no not those rims, disco steelies look better

i have a set of bfg at's 235/85/16 and a set of 7.5x16 steel trexs, not much differance in size