Thread: D4 rims and second battery

I've posted up a PDF of the GMAX rim design over at disco3.co.uk - link is:

http://www.disco3.co.uk/gallery/albums/use...18_rim.pdf

Cheers,

Gordon

That's quite a tame design - not too showy. I'm a little surprised that the spokes don't need to be more solid to take the required load and posisble abuse.

Will it use the std D4 nuts or tapered nuts with enough threads to comply with regulations? The holes don't look large enough for LR ones but maybe that's only a minor design detail.

Could you confirm its width and offset please?

Edit: Saw 18x8 in your Disco3 post. Also, not that it's prohibitive if excl, but is that price incl or excl of GST?

Hi Graeme,

I'm waiting for the offset information - the rim width is 8"

[edit] Oh - I already had the offset info - it's 45mm. Here's a picture of the real wheel (but the 20" version):

http://www.disco3.co.uk/gallery/albu..._forged_20.jpg

Cheers,

Gordon

Seem to leave a big gap between spokes for a rock to bend the rim?

I am sure being forged the load rating would e ok but impact resistance?

I've done that to an LR 17" rim, so yes, it would be possible. But being forged, the impact resistance will be higher too - the metal is less porous.

Cheers,

Gordon

What tyres that are sufficiently tougher or otherwise better than something in 19" like Pirelli ATR, or perhaps Continental Cross Contact AT if the sidewalls are any good, are going to make it worthwhile to get new 18" rims? Just going to the 18" version of a 19" tyre wont provide much justification for me, nor to a tyre that is renouned for weak sidewalls.

Currently my only real candidate is BFG-AT in 265/65-18, being medium agressiveness, not too wide, has tough sidewalls and the extra height would be useful for both ground clearance and longer footprint at lower pressures in sand. I understand that they can be noisy and some have found them slippery in the wet especially as they age, but I have no experience with them and they'd be worn out within 3 years anyway.

What will others use?

In 18" - the BFG AT, like you said, there's also the Cooper LTZ, Nitto Terra Grappler, various Bridgestones, Toyo, and Mickey Thompson and Kumho A/T and M/T tyres. The new Goodyear MTR with Kevlar is available in 18" as well.

You also get a taller sidewall and can lower the pressure a bit more than the stock 19" size.

And you get wheels which are less likely to get hit because they are an inch smaller (18") and if they do less likely to crack than the OEM 19" because they are forged.