Thread: 4" lift???

sorry yeah i have a d1

Originally Posted by 2 rocks

Hi Slunnie
So from what I read, you're running mainly 33x10.5?

I guess I had been thinking that I would probably look at 33x12.5 Pro Comps or STT's (as I have on the Jeep) but it seems the issue is more the width rather than height that necessitates the guard cutting at these sizes (as in for steering lock rather than running out of up-travel)?

In which case 10.5 will do...
Cheers
Mike

Gday Mike,

I've run a few sizes under there. 255/85-16 (Cooper ST, Cooper STT), 285/75-16 (Goodyear MTR, Pirelli ATR) and 33x10.5-16 (Simex JT2). With trimmed guards I also run 34x11.5-16 (Simex JT2). The 34x11.5's measured 35.2" in diameter in the middle of the treadface, and through the bag on 8" rims measured 300mm on the dot. Based on this, I'm going to guess that you could run 305/70-16 (16" rim equiv of a 33x12.5) but I'm not putting money on it. That width will also be very tight with the rear window wiper. The 285's (33x11.5-16) will lose just the smallest amount of steering lock but is a really good fit.

Originally Posted by MickG

The 4" lift is like the holy grail for me........been considering it for so long but still need to get mu head around what is actually involved before getting started.
Currently have a 2" lify with 33" tyres and get slight rubbing at full lock and ful compression.
Cooter, is it a D1 or 2 you have as the D2 has different size coils front and back I think?

Aye, Mick

The spring length differences are because the lower perches on the D2 are a different depth compared to the D1. When you run the LC springs, the lower perches have to be inverted and they retain the spring like a cup, rather than like a hat - so it probably wont make any difference. The only prob that there may be that I can see without having tried it, is if the D2 lower shock mounts interfere with the LC coil.

Originally Posted by Slunnie

Gday Mike,

I've run a few sizes under there. 255/85-16 (Cooper ST, Cooper STT), 285/75-16 (Goodyear MTR, Pirelli ATR) and 33x10.5-16 (Simex JT2). With trimmed guards I also run 34x11.5-16 (Simex JT2). The 34x11.5's measured 35.2" in diameter in the middle of the treadface, and through the bag on 8" rims measured 300mm on the dot. Based on this, I'm going to guess that you could run 305/70-16 (16" rim equiv of a 33x12.5) but I'm not putting money on it. That width will also be very tight with the rear window wiper. The 285's (33x11.5-16) will lose just the smallest amount of steering lock but is a really good fit.

Thanks Slunnie
Making notes as I go!

Re: the rear window wiper - I can barely fit a sheet of paper between my 31" ST and the bumper now - hadn't thought about the wiper. I see you inverted the tyre carrier - does it go straight back on upside down? Could it be spaced out with nylon bushes to give more clearance?

Be nice to see an aftermarket rear bar with a tyre "scallop"...
Cheers
Mike

Originally Posted by 2 rocks

Thanks Slunnie
Making notes as I go!

Re: the rear window wiper - I can barely fit a sheet of paper between my 31" ST and the bumper now - hadn't thought about the wiper. I see you inverted the tyre carrier - does it go straight back on upside down? Could it be spaced out with nylon bushes to give more clearance?

Be nice to see an aftermarket rear bar with a tyre "scallop"...
Cheers
Mike

Invert the rear wheel carrier, you'll need too drill 2 extra holes in the carrier to re-attach it too the door, it's a 10min job

Baz.

Originally Posted by Redback

Invert the rear wheel carrier, you'll need too drill 2 extra holes in the carrier to re-attach it too the door, it's a 10min job

Baz.

Cool
Thanks Baz!
Cheers
Mike

OH WHAT AN EVIL THREAD THIS IS!!!!!!!!

You all make it sound EASY and SO MUCH FUN.....

Anyway..... Slunnie, with the smaller tyres, and the 4.11 diffs how do you find the revs, it would be revving lower but only by a few percent........ I miss the torque from my original tyre size, I moved up to 31", want to go to 32 inch tyres and was tossing up whether or not to get 4.11's. Sorry if this is a Hijack....

Originally Posted by mrapocalypse

OH WHAT AN EVIL THREAD THIS IS!!!!!!!!

You all make it sound EASY and SO MUCH FUN.....

Anyway..... Slunnie, with the smaller tyres, and the 4.11 diffs how do you find the revs, it would be revving lower but only by a few percent........ I miss the torque from my original tyre size, I moved up to 31", want to go to 32 inch tyres and was tossing up whether or not to get 4.11's. Sorry if this is a Hijack....

After its been done then its all easy.

With the 33's and 4.11's all of the gearing goes back to standard again, so it doesn't make any difference there. I guess if you want to get really technical then there may be some differences in rolling resistance and all of that, but it drives well. With the Simex on, the change is about 5% IIRC, or something similar so the change isn't all that great. Running the Simex is a big change though.

When I first went to 33's I was running the standard diff gears and with the auto it was ok. The economy wasn't nearly as regular though, fluctuating a bit, both up and down. I think it is more the people that have manuals that feel the difference with bigger tyres.

As a side note, if you do change the diff gears to 4.11 and have a manual then you will lose your cruise control unless you correct the speedo. When the speedo is corrected though, it needs to be corrected to suit the diff gears and not the tyre diameter. With the auto it is all good and you can adjust the speedo to suit the tyres with the CC unaffected.