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rover

Member Since: 26 May 2012
Location: Yorkshire
Posts: 146

7.5 16 height compared to 235.85.16 tyres

Hi guys,

I have a favour to ask. I am hoping to replace my Michelin latitude cross tyres with a 235.85.16 tyre probably something like goodyear wrangler duratrak . Problem is that my land rover 110 just managed to get into the garage with about 20mm to spare. A lot of people think 7.5 16 tyres are the same height as 235.85.16 but the Michelin latitude cross tyres are 170mm high measured from the edge of the steel rim to the edge of the tyre on the unused spare. Michelin website states that they are 7.5 80 16 which works out far less high than 238 85 16.

Can anyone measure from the edge of the rim to the edge of the tread on a 235 85 16 mud terrain with no wear as I do not want to spend £600 on tyres and then not get my landy into the garage.

Thanks in advance.

20th Jan 2015 7:57pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5745

1999 Defender 110 Td5 SW Caledonian Blue

Its not a MT but a BFG AT with 3500 miles of wear and I am 180mm. HTH. (235/85 R16) 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

20th Jan 2015 9:31pm

leeds

Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8578

A 7.5 R16 has a diameter of 31"

A 235/85/16 has a diameter of 31.7"

0.7' will give an extra 0.35" or about 9mm difference in height of vehicle.

Bit of handwaving, depends on depth of tread/tyre pressure etc but gives you a rough idea.

Brendan

20th Jan 2015 9:40pm

rover

Member Since: 26 May 2012
Location: Yorkshire
Posts: 146

Thanks guys, It should fit in the garage with 10mm to spare.

20th Jan 2015 10:12pm

Cuthbert

Member Since: 26 Oct 2013
Location: Up North
Posts: 1535

After responses to a previous request to measure vehicle heights - it was apparent that no two Defenders (even with the same wheels/tyres) were the same height.

Springs are another variable in your equation - so allow for a degree of tolerance in your research. Whether 10mm is enough I wouldn't like to bet on?

Waste of time dealing with published sizes - tyres are not circular when inflated and carrying the weight of a vehicle.

I've got a set of new Good Year Wrangler MTRs (less than 1000 miles) on my 2014 90 Station Wagon and just 5 minutes ago I checked the overall vehicle height - a couple of mm short of 2000mm.

Distance from edge of rim to edge of tread around 170mm - but at the bottom where the tyre is fully loaded that drops to 160mm. Of course the distance from edge of the rim to a line from the centre of the tread at its highest point is far greater.

20th Jan 2015 10:25pm

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