Tallest wheels (not widest) on a standard 110?

Ian Rawlings · May 4, 2005

Hello all, am looking to get some new tyres in the near-ish future,
and am a fan of skinny wheels rather than fat ones. Most of the past
advice on the group has been about how fat you can get rather than how
tall. I'd imagine that a thin tyre will fit better than an equivalent
diameter fat tyre, so am interested in any experiences that others
have had with fitting tall thin tyres to the truck without mods.

Any takers?

--
For every expert, there is an equal but opposite expert

Alex · May 4, 2005

On Wed, 4 May 2005 19:20:02 +0100, Ian Rawlings <[email protected]>
wrote:

>Hello all, am looking to get some new tyres in the near-ish future,
>and am a fan of skinny wheels rather than fat ones. Most of the past
>advice on the group has been about how fat you can get rather than how
>tall. I'd imagine that a thin tyre will fit better than an equivalent
>diameter fat tyre, so am interested in any experiences that others
>have had with fitting tall thin tyres to the truck without mods.
>
>Any takers?

Suggest you try Halfords Bike department.

Alex

Ian Rawlings · May 4, 2005

On 2005-05-04, Alex <[email protected]> wrote:

> Suggest you try Halfords Bike department.

No chance! I've got a mountain bike and every time I've ever gone out
on it, I've got a puncture. Mind you at least I've proven that the
tyres can handle over a tonne of weight ;-)

--
For every expert, there is an equal but opposite expert

PDannyD · May 4, 2005

On Wednesday 04 May 2005 19:20, Ian Rawlings([email protected]) wrote in
message <[email protected]>

> Hello all, am looking to get some new tyres in the near-ish future,
> and am a fan of skinny wheels rather than fat ones. Most of the past
> advice on the group has been about how fat you can get rather than how
> tall. I'd imagine that a thin tyre will fit better than an equivalent
> diameter fat tyre, so am interested in any experiences that others
> have had with fitting tall thin tyres to the truck without mods.

These are roughly in size order.

7.50/16
235/85R16 <---- my favourite
9.00/16

Ian Rawlings · May 4, 2005

On 2005-05-04, PDannyD <[email protected]> wrote:

> 7.50/16
> 235/85R16 <---- my favourite
> 9.00/16

What I'm really after TBH is the same width as my 750R16s but taller
to add more ground clearance while retaining the same cutting ability
of the 750R16s. The 235/85R16s are wider and a little taller if my
maths is right, but not really tall enough. The 750R16s are about 30
inches diameter, ideally I'd get sommat like 33-36 inches in a 7.5
inch width. I might need a 1 or 2 inch lift for that though.

--
For every expert, there is an equal but opposite expert

Raoul Donschachner · May 5, 2005

Ian Rawlings <[email protected]> wrote:

> What I'm really after TBH is the same width as my 750R16s but taller
> to add more ground clearance while retaining the same cutting ability

Thats not possible because tyres with this kind of sizes have a 1005 of
the width-sidewall height. And there is nothing with more than 100%.
Taller has to wider. Smallest taller size is 9x16 or the aequivalent,
255/100-16 (Michelin makes them)

> of the 750R16s. The 235/85R16s are wider and a little taller if my
> maths is right, but not really tall enough. The 750R16s are about 30

No, they are exactly the same diameter. I change tyres quite frequently
on my Land Rovers and often have them side by side to see the same
diameter. The Michelin XS in 750x16 on a 6,50 mangels wheel for instance
are also exactly the same width as my BFG AT 235/85-16 on the wolf
wheels.

> inches diameter, ideally I'd get sommat like 33-36 inches in a 7.5
> inch width. I might need a 1 or 2 inch lift for that though.

The american tyres where you can roughly choose width and height are
mostly 15 inches.

Raoul
--
==To e-mail me exchange das_liest_keiner with anything else==
I'll give up my Land Rover when you pry my cold dead fingers
from the steering wheel.

JD · May 5, 2005

Ian Rawlings wrote:

> On 2005-05-04, PDannyD <[email protected]>
> wrote:
>
>> 7.50/16
>> 235/85R16 <---- my favourite
>> 9.00/16
>
> What I'm really after TBH is the same width as my 750R16s but taller
> to add more ground clearance while retaining the same cutting ability
> of the 750R16s. The 235/85R16s are wider and a little taller if my
> maths is right, but not really tall enough. The 750R16s are about 30
> inches diameter, ideally I'd get sommat like 33-36 inches in a 7.5
> inch width. I might need a 1 or 2 inch lift for that though.
>

To go higher but stay with 7.50 width, you will have to go to a larger wheel
diameter - you will be looking at custom wheels. I can't think of any
recent cars with 17, 18 or 19 inch narrow tyres, but you may be able to
find ones made for vintage cars (but they will be cross plies with on road
tread). However, to get any choice you are looking at 20 inch - and at that
size you are talking major body and suspension mods, although it has
probably been done.
JD

Ian Rawlings · May 5, 2005

On 2005-05-05, Raoul Donschachner <[email protected]> wrote:

> Thats not possible because tyres with this kind of sizes have a 1005 of
> the width-sidewall height. And there is nothing with more than 100%.
> Taller has to wider. Smallest taller size is 9x16 or the aequivalent,
> 255/100-16 (Michelin makes them)

OK, so I'd need new wheels at least, that's not so bad and what I was
expecting. I get the feeling though that my choices in tread pattern
are likely to be very limited if I want to go narrow!

> No, they are exactly the same diameter. I change tyres quite frequently
> on my Land Rovers and often have them side by side to see the same
> diameter.

I measured mine at 30 inches diameter and calculated the 235's at 31.5
so the 1.5 inches I'd imagine is well within bounds of squashing and
minor measuring point changes, I've never had the opportunity to
compare them in the flesh as you have done.

So do you know of any tyres that are of a similar width but a little
taller? Something like a 235/100/16 (if I am getting my tyre sizes
right)? Or even 235/85/rim larger than 16?

> The american tyres where you can roughly choose width and height are
> mostly 15 inches.

Is that a 15 inch rim?

There are so many different measurements and measurement systems
involved that I have to confess to getting them a little confused at
times so sorry if I seem a little sideways..

--
For every expert, there is an equal but opposite expert

Ian Rawlings · May 5, 2005

On 2005-05-05, JD <[email protected]> wrote:

> To go higher but stay with 7.50 width, you will have to go to a
> larger wheel diameter - you will be looking at custom wheels. I
> can't think of any recent cars with 17, 18 or 19 inch narrow tyres,

Not sure what you mean by 17, 18 or 19 inch tyres, I'm assuming you
meant rims rather than tyres?

> but you may be able to find ones made for vintage cars (but they
> will be cross plies with on road tread). However, to get any choice
> you are looking at 20 inch

20 inch what? 20 inch rims? My current rims are 16 inches diameter,
my tyres are 30 inches diameter, I'm not sure where the numbers you
are quoting fit in.

> - and at that size you are talking major body and suspension mods,
> although it has probably been done.

I've seen some hulking great big tyres put on a landy with Volvo C303
portal axles, that was a mighty beast ;-) The axles added about 4
inches of clearance themselves. A little too much modification for me
really, I don't mind adding 1 or 2 inches lift.

--
For every expert, there is an equal but opposite expert

Raoul Donschachner · May 5, 2005

Ian Rawlings <[email protected]> wrote:

> So do you know of any tyres that are of a similar width but a little
> taller? Something like a 235/100/16 (if I am getting my tyre sizes
> right)? Or even 235/85/rim larger than 16?

I personally know of no tyres with metric sizes and 100% height to widht
ratio other than the aforementioned Michelins.

> > The american tyres where you can roughly choose width and height are
> > mostly 15 inches.
>
> Is that a 15 inch rim?

Yes

> There are so many different measurements and measurement systems
> involved that I have to confess to getting them a little confused at
> times so sorry if I seem a little sideways..

it is confusing

Raoul
--
==To e-mail me exchange das_liest_keiner with anything else==
I'll give up my Land Rover when you pry my cold dead fingers
from the steering wheel.

JD · May 5, 2005

Ian Rawlings wrote:

> On 2005-05-05, JD <[email protected]> wrote:
>
>> To go higher but stay with 7.50 width, you will have to go to a
>> larger wheel diameter - you will be looking at custom wheels. I
>> can't think of any recent cars with 17, 18 or 19 inch narrow tyres,
>
> Not sure what you mean by 17, 18 or 19 inch tyres, I'm assuming you
> meant rims rather than tyres?
>
>> but you may be able to find ones made for vintage cars (but they
>> will be cross plies with on road tread). However, to get any choice
>> you are looking at 20 inch
>
> 20 inch what? 20 inch rims? My current rims are 16 inches diameter,
> my tyres are 30 inches diameter, I'm not sure where the numbers you
> are quoting fit in.
>
>> - and at that size you are talking major body and suspension mods,
>> although it has probably been done.
>
> I've seen some hulking great big tyres put on a landy with Volvo C303
> portal axles, that was a mighty beast ;-) The axles added about 4
> inches of clearance themselves. A little too much modification for me
> really, I don't mind adding 1 or 2 inches lift.
>

Yes, the numbers I referred to are rim sizes. The point is, as tyres are not
made with height to width ratio more than 100%, if you want to go to larger
diameter with the same (7.50) width, you will have to go to a larger wheel
diameter. But tyres with 100% ratio and rim sizes between 16 and 20" are
(well and truly) obsolete so choice will be very limited. 20" is a standard
truck size, but 7.50 is at least obsolescent, and, again, your choice of
tread will be very limited.

Maybe you need to talk to a tyre supplier about options, but I suspect you
will find that there is not any practical way of doing what you want.
JD

nickc · May 6, 2005

The 750R16s are about 30
inches diameter

depends on the tyre manufacturer as well.
I`ve just fitted a set of firestone SAT's 7.50x16 (yup, i found a set
that weren`t all cracked and knackered, like rocking horse pooh!)
I rolled them towards my vehicle past the project rangerover which is
wearing 255/85 tyres. These are 33" diameter.
For some reason the firestones are the same diameter! i couldn`t
believe my eyes at first, so i got my tape measure out and the diameter
measured in at 33.4 inches!!!!!

that ain`t bad for a 7.50x16
By the same thing, my avon rangemasters were a 7.50x16 and measured in
at 31.2 inches. Dunno if its just the tread depth that makes the
difference or if different manufacturers use different construction
techniques giving different overall diameters.

nick

Ian Rawlings · May 6, 2005

On 2005-05-06, nickc <[email protected]> wrote:

> For some reason the firestones are the same diameter! i couldn`t
> believe my eyes at first, so i got my tape measure out and the
> diameter measured in at 33.4 inches!!!!!

Blimey! These tyre sizes are a real PITA. Some kind of link to
reality would be nice. Perhaps they're swelled up with water like
bacon ;-)

Then again 750R16 only specifies that it's 7.5 inches wide and fits a
16 inch rim, so doesn't specify sidewall height I suppose.. That's if
these bonkers measurements are what I think they mean.

> that ain`t bad for a 7.50x16 By the same thing, my avon rangemasters
> were a 7.50x16 and measured in at 31.2 inches. Dunno if its just the
> tread depth that makes the difference or if different manufacturers
> use different construction techniques giving different overall
> diameters.

I'm beginning to think tyre manufacturers are just a bunch of loonies!

--
For every expert, there is an equal but opposite expert

Dave Liquorice · May 6, 2005

On 6 May 2005 05:23:39 -0700, nickc wrote:

> ... is wearing 255/85 tyres. These are 33" diameter.
> For some reason the firestones are the same diameter! i couldn`t
> believe my eyes at first, so i got my tape measure out and the
> diameter measured in at 33.4 inches!!!!!
>
> that ain`t bad for a 7.50x16
> By the same thing, my avon rangemasters were a 7.50x16 and measured
> in at 31.2 inches.

Well according to the second link previously posted imperial tyres
don't state the section ratio and it is *assumed* to be 100%. But you
know what assumptions do, they make and ass out of u and me...

--
Cheers [email protected]
Dave. pam is missing e-mail

JD · May 6, 2005

Ian Rawlings wrote:

> On 2005-05-06, nickc <[email protected]> wrote:
>
>> For some reason the firestones are the same diameter! i couldn`t
>> believe my eyes at first, so i got my tape measure out and the
>> diameter measured in at 33.4 inches!!!!!
>
> Blimey! These tyre sizes are a real PITA. Some kind of link to
> reality would be nice. Perhaps they're swelled up with water like
> bacon ;-)
>
> Then again 750R16 only specifies that it's 7.5 inches wide and fits a
> 16 inch rim, so doesn't specify sidewall height I suppose.. That's if
> these bonkers measurements are what I think they mean.
>
>> that ain`t bad for a 7.50x16 By the same thing, my avon rangemasters
>> were a 7.50x16 and measured in at 31.2 inches. Dunno if its just the
>> tread depth that makes the difference or if different manufacturers
>> use different construction techniques giving different overall
>> diameters.
>
> I'm beginning to think tyre manufacturers are just a bunch of loonies!
>

Haven't struck this with 7.50 tyres, but I struck it a couple of years ago
trying to replace a tractor tyre - only way I could get one close enough to
the same size was to get two, and sell the good one to the retailer, who
happened to have a tractor the same with mismatched tyres! So I am not
surprised.

I suspect that in some cases the 7.50 refers to the size of the space the
tube fits in, so the thickness of the belt and tread is added to it, where
other manufacturers reduce the size of the tube space to allow for the
tread and belt thickness to keep their tyres the same overall diameter.
Same probably applies to other sizes. Last night I looked up the steering
stop information for the 110 - and found that the stop setting depends on
the brand of tyre, as well as the size!
JD

Dougal · May 6, 2005

nickc wrote:

>

The 750R16s are about 30
> inches diameter
>

>
> depends on the tyre manufacturer as well.
> I`ve just fitted a set of firestone SAT's 7.50x16 (yup, i found a set
> that weren`t all cracked and knackered, like rocking horse pooh!)
> I rolled them towards my vehicle past the project rangerover which is
> wearing 255/85 tyres. These are 33" diameter.
> For some reason the firestones are the same diameter! i couldn`t
> believe my eyes at first, so i got my tape measure out and the diameter
> measured in at 33.4 inches!!!!!
>
> that ain`t bad for a 7.50x16
> By the same thing, my avon rangemasters were a 7.50x16 and measured in
> at 31.2 inches. Dunno if its just the tread depth that makes the
> difference or if different manufacturers use different construction
> techniques giving different overall diameters.
>
> nick

There are two lots of 7.50-16s around: the cross plies and the radials.

The Firestone SATs are cross plies with an aspect ratio of about 100%.
The Avon Rangemasters are radials with an aspect ratio of around 80%.

Hence the SATS have a larger free outside diameter.

Tallest wheels (not widest) on a standard 110?

Ian Rawlings

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