I have a 2006 XK Limited wtih the 5.7 HEMI. I do very little off-roading, but the winters here in WV get bad (like this week!) and I would like some more ground clearance. I've read dozens of posts about what lifts you all are using, tire size, spacers, etc. But I haven't found anything for someone like me who isn't interested in off-roading--just getting higher ground clearance. If there is a thread for this somewhere, please direct me, but I couldn't find one. So here's my issue:
If I stick with the stock rims and put a 2" lift kit on it with no spacers, is a 245/75R17 the tallest tire I can put on it without ANY rubbing?
I did the math (correctly I hope) and it looks like that only increases the diameter by about 0.7 inches. This is my first time into this topic, but that seems like a lot of money, time, and effort for less than an inch of clearance! Someone please help clear this up for me. This isn't going to be cheap and I want to make the right decision.
Hi RPG Programmer (did I guess right?),
(Edit: It took me so long to get this long answer out that I see 07JeepXK already addressed this, so don't read this as thinking he didn't answer it right. His posts weren't there when I started my post).
Several points to cover I think-- first when you say no rubbing, is that no rubbing without trimming the wheel well plastic liners and hammering down or cutting the excess sheet metal on the pinch welds or are you willing to do that?
Second, I think your tire math is wrong (or you meant radius not diameter). Here's a discounttire page with a handy calculator:
Stock tires are 29.5 inch diameter, 245/75/17's are 31.5, so you get half of the difference in diameter in lift which is 1 inch +_ a tenth depending on the actual tire.
The tires will set the ground clearance of any hardware hard connected to the wheels, like the rear differential. The 2 inch lift installed on the rear springs and the front struts will not lift the those items that are hard connected to the wheels. However, the suspension lift will raise the rest of the vehicle, giving better clearance on the floor pans, oil pans, muffler, skid plates and everthing else under there that tends to grab deep snow and vice versa. Make sense?
So if you put on a 2 inch suspension lift and 31.5 inch tires, then for the most part, you'll get about 3 inches better clearance for snow, minus the stuff I mentioned earlier, like the rear diff. Now if you were trying to clear rocks, you would need to pick your line through to avoid hitting the diff on a high rock and you would only have 1 inch more than stock, so it would be a big concern. But considering you are plowing through snow, and your goal is merely to get through deep snow without getting stuck, you don't have to worry so much about the parts that were only lifted 1 inch.
So, you have to decide if that is worth it or not.
I'm not sure if the 245/75/17's can be used without spacers and without trimming. Maybe. But 245/70's can be used without spacers and without trimming. I put on 255/75/17's (32 inch tires) but I needed the wheel spacers and trimming.
Hope this helps.