Hi guys,

my disco came with BFG AT 275/65/18 tyres (it has 2" lift). The previous owner also gave me the original wranglers 255/55/18.

My main concern is that by running such huge tyres (32.1") will damage my drive train... Does this proceed?

Also, I'm not sure how the stock size tyres will look with the 2" lift... And if the ride will be less comfy...
What do you guys think?

 

Those tires are perfect for that lift! Couple things to check though... Do you have a rebuilt or upgraded front driveshaft? If not, you'll want to buy a quality double-cardon driveshaft for that (I like Great Basin rovers). You might notice a slight loss of acceleration with 32" tires, but if you aren't towing up any mountains you probably won't mind it. There is a fix for that as well though and that is to regear the differentials. That's expensive so I would only do that if you notice power loss.

Check your front driveshaft if it's been replaced! Those are prone to fail even without a lift. You'll know if it's original if it doesn't have serviceable (grease nipples) on the joints and shaft. I think the original only had 1.

 

I would think that a 32" tire would negatively impact mpg as well. Anyone have any thoughts or is the D2 mpg so bad that no one cares?

 

We don't drive Discos for economic reasons

 

I really don't plan to spend on upgrading these parts

So, do the 275/65/18 tyres cause damage? I'll put the 255/55/18 on...

 

Nah, the 32s won't damage anything. Tons of guys run them (myself included), and a few even run larger on stock drivetrains. You'll be fine.

 

If your front driveshaft hasn't been replaced, it's just an accident waiting to happen. When it goes, it normally takes out the transmission with it. You can spend a couple hundred now or 2k later...

 

What do you mean by "an accident waiting to happen" ??
Is it due to the 275/65/18 tyres? If I go back the 255/55/18 no need to replace anything?

Sorry, but you really got me worried

 

Regardless of what size tires you have, the front driveshaft needs to be checked. Land Rover designed a driveshaft with non-greaseable U-joints. The back two are inches away from the catalytic converter and get the grease inside them baked. WHEN the rear joints fail (and they will if not replaced) at best they destroy the driveshaft. At worst, knock a gaping hole in your transmission case.

If your front driveshaft doesn't have grease zerks on all 3 joints, it needs attention. Do a forum search for driveshaft failures and also write-ups and how-to's.

 

Thanks lordmorpheus for making it clearer

So the 32" tyres aren't really the reason to upgrade the driveshaft? If I keep them and then just replace the UJs am I good to go?