15 x 8 rims?

[noogie]

Hi all

I was thinking about getting a set of -22 offset 15x8 rims.
Does the size affect the speedo reading or are there any other issues running this size?

I've been told that the wheel Centre hole should fit snug over the hubs as this puts less stress on the wheel studs.
Some people have said it doesn't matter but I'm not convinced.

Any thoughts?
Cheers
Mick

[jimr1]

Hi Mick , I've run 15x8 on Shorty series 3 , also stage 1 109 wagon , and 110 county , and never had a problem , still got them . The only thing is you have to make sure the wheel nuts are tight , as they have a flat face . I think If you have too much offset they will hang outside the standard guard , so you need to think about that . My son in law has had them on his Disco for years , and never had any bearing problems , or any other problems come to that .

[noogie]

So as long as the wheel nuts are tight, it doesn't matter if the wheel Centre is larger than than the hubs and don't fit snug?

[85 county]

mate

i run 15X8 on my isuzu county
with 12.5 X 33 X 15 BFG. no issues. even have an extra set of rims here with 32" DDs on them.

no issues the rubber lines up with the gards just.
had a pommy cop stop me once, but as i told him, std dia, and less than 2" wider. didnt tell him std for a county and with for a late modle defender.

i used to tow boomlifts around schools etc, the BFGs being so big would not mark the ground so i always got called back

[POD]

There's been a lot of discussion about whether wheels are located by the spigot or by the wheel nuts, I believe the upshot is that alloy wheels are located by the spigot being a snug fit on the hub, whereas steel rims are located by the taper of the wheel nut and do not need to be a close fit in the centre hole/spigot.
The size of the rim does not affect speedo reading, it is the rolling diameter of the tyre that does that. Tyres of the same rolling diameter will simply be 1/2" taller in the sidewall in a 15" tyre vs a 16" tyre.
I always wonder about the effect on wheel bearings, stub axles and swivel pin bearings of such a big change in wheel offset. Seems to me to be a significant change in load moments from how the factory designed the front end.

[noogie]

There's been a lot of discussion about whether wheels are located by the spigot or by the wheel nuts, I believe the upshot is that alloy wheels are located by the spigot being a snug fit on the hub, whereas steel rims are located by the taper of the wheel nut and do not need to be a close fit in the centre hole/spigot.
The size of the rim does not affect speedo reading, it is the rolling diameter of the tyre that does that. Tyres of the same rolling diameter will simply be 1/2" taller in the sidewall in a 15" tyre vs a 16" tyre.
I always wonder about the effect on wheel bearings, stub axles and swivel pin bearings of such a big change in wheel offset. Seems to me to be a significant change in load moments from how the factory designed the front end.

Thanks pod.
Is -22 offset enough if I want to run 35" tyres one day?
I guess it'll depend on how wide they are hey?

[PSI250]

-22 is the offset you'd go for wider/larger Tyres. I'm pretty sure it's the largest offset available on dynamics before going to -44 on 10" rims.

[pommy]

Been running that size on my fender for few years micka no dramas yet you might have to change your flares though as my tyres stuck out the sides , got my flares from UK think about $400 delivered .

[noogie]

It's always the case. But one thing and ya gotta buy something else Hey Richo?

[JDNSW]

......
I always wonder about the effect on wheel bearings, stub axles and swivel pin bearings of such a big change in wheel offset. Seems to me to be a significant change in load moments from how the factory designed the front end.

A few moments reflection will remind us that the front axle was originally designed for the Rangerover in the late sixties - almost certainly with 6.00x16 tyres. This small change in tyre size pales into insignificance compared to the loads imposed on the design by, for example, an Isuzu engine over the top of it on a civilian 6x6 carrying two tonnes, or the increase in tyre size since then on the standard 110.

John

[Dougal]

There's been a lot of discussion about whether wheels are located by the spigot or by the wheel nuts, I believe the upshot is that alloy wheels are located by the spigot being a snug fit on the hub, whereas steel rims are located by the taper of the wheel nut and do not need to be a close fit in the centre hole/spigot.
The size of the rim does not affect speedo reading, it is the rolling diameter of the tyre that does that. Tyres of the same rolling diameter will simply be 1/2" taller in the sidewall in a 15" tyre vs a 16" tyre.
I always wonder about the effect on wheel bearings, stub axles and swivel pin bearings of such a big change in wheel offset. Seems to me to be a significant change in load moments from how the factory designed the front end.

The centre spigot is there for alignment and to take gross overloads if the nuts aren't tight enough.