Outer Limits 4x4 Board

ive got a standard hjz105 and am looking at putting some new tyres on the 16" sunnys.
ive decided on maxxis bighorn but i dont know wether i should go 305/70r16 or 315/70r16. with 30mm coil spacers, will the 315 fit? or will i need the 3inch lift im planning first?

also, what gearing is best suited to 33" and 35"?

cheers, ned

315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

98lux wrote:315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

What about locating the front control arms forward 30mm - would that be enough?

Paul

I have 35's on my Hunjy with a 3" lift as said before I removed the mud flaps (illegal) the rears scrape a little at full flex but I am not worried the front end is all good except you need to lengthen the diff breathers when you do the lift mine keep on coming off.

me3@neuralfibre.com wrote:

98lux wrote:315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

What about locating the front control arms forward 30mm - would that be enough?

Paul

Yes it would but at what cost, will the slip yoke be long enough as it slid out about 1" just with the 3" lift. You would need to buy longer arms as well.

98lux wrote:

me3@neuralfibre.com wrote:

98lux wrote:315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

What about locating the front control arms forward 30mm - would that be enough?

Paul

Yes it would but at what cost, will the slip yoke be long enough as it slid out about 1" just with the 3" lift. You would need to buy longer arms as well.

Darren's done something like this on his Rooby project - 80scool.
He may be reading this.

Paul

me3@neuralfibre.com wrote:

98lux wrote:

me3@neuralfibre.com wrote:

98lux wrote:315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

What about locating the front control arms forward 30mm - would that be enough?

Paul

Yes it would but at what cost, will the slip yoke be long enough as it slid out about 1" just with the 3" lift. You would need to buy longer arms as well.

Darren's done something like this on his Rooby project - 80scool.
He may be reading this.

Paul

Darren runs a 3' lift, with bumpstop extensions, arms 12mm forward and 37 procomps... the key here is limiting upwards travel and maximising down travel

98lux wrote:315/75/16 still will not fit just with a 3" lift, trust me i know i just got some for my hzj105, front mud flap and wheel well needs a little tap with a big hammer. and the rear bump stops need dropping down a bit.

No need for hammers ;-)

It's that nobby bit moulded into the flap covering the end of the sill that scrapes, some just trim that off, or fold the end of the sill 90 deg. and stick a screw through the flap into it. I replaced the front flaps with some cut from rally type flat poly material, they now *just* scrape on turns when compressed.

You will need to drop the rear bump stops too. Even with 285's the tyres will rub the inner guard at full articulation if you have long shocks, 305's will be worse, and 315's even moreso.

I still run std 4.3 diffs, ideally you need lower gearing but it's not readily available for the 100/105 rear.

drop the rear bump stops???? can you please explain that a bit better

You need to limit the up travel of the rear wheel to stop it hitting the inner gaurd. To do this, you lower the rear bump stops (put a spacer in between the bump stop and the chassis)

but wouldt that limit flex?

98lux wrote:You need to limit the up travel of the rear wheel to stop it hitting the inner gaurd. To do this, you lower the rear bump stops (put a spacer in between the bump stop and the chassis)

What about running a 10-15mm wheel spacer (yeah - legal issues).
Or different offset rims?

Thanx
Paul

ned wrote:but wouldt that limit flex?

Only up travel not down travel.
Just go to you local flex rock or track and flex it slowly till the rear wheel is just missing the inner guard and the measure the distance between the diff and the bump stop and that is how much up travel will be lost.

me3@neuralfibre.com wrote:

98lux wrote:You need to limit the up travel of the rear wheel to stop it hitting the inner gaurd. To do this, you lower the rear bump stops (put a spacer in between the bump stop and the chassis)

What about running a 10-15mm wheel spacer (yeah - legal issues).
Or different offset rims?

Thanx
Paul

Yes you could, but as you said "legal issues", and as for the offset rims, you then run into issues with the tyres out side the gaurds, so some flares need to be put on.

me3@neuralfibre.com wrote: What about running a 10-15mm wheel spacer (yeah - legal issues).
Or different offset rims?

Paul, from memory you would then have an issue with the tyre fouling the guard lip when both sides of rear suspension go full compression, i.e. big speed bump, jump, etc.

This would also compound the issue with front tyres rubbing too.

ned wrote:but wouldt that limit flex?

Of course, but a proper solution would be to use a longer stroke shock so that you wouldn't loose anything

ok, so to recap and get all the info in one post.

35's will fit with a 3 inch lift if the sill cap is removed and rear bumpstops are dropped. longer shocks will gain back articualtion after bump stop drop.

ned wrote:ok, so to recap and get all the info in one post.

35's will fit with a 3 inch lift if the sill cap is removed and rear bumpstops are dropped. longer shocks will gain back articualtion after bump stop drop.

Basically yes. Remember, adding lift doesn't make the wheel arches bigger ;-)