Hi there! I totally get the stress! Honestly, I was in the exact same boat with my Disco Sport last winter. Because the clearance is so tight, I really think you should go with the Konig K-Summit K45 External Snow Chains. They're amazing! I was worried about the price too, but they don't touch the inner suspension at all. Seriously, they're a lifesaver and so easy to fit! Hope this helps!

Story time: I went through this last year when I took my Disco Sport to the Alps. I was staring at that tiny gap between the 235/60 R18 tires and the strut thinking there was no way a standard chain would fit without shredding my ABS sensors. It's super tight in there!

I actually tried a cheaper set of 12mm chains first—big mistake. I could hear them clicking against something on a test fit, so I pulled them off immediately. Just sharing my experience: be careful with anything over 9mm. I eventually looked into the Pewag Snox Pro SXP 540 as a middle-ground option because, tbh, those external ones are pricey. Even with slim chains, the clearance is so minimal that I ended up checking them every 10 miles. TL;DR: Standard chains are a massive risk for your brake lines; stick to ultra-slim or external mounts to play it safe.

> My main concern is the clearance behind the wheel. Looking at my 235/60 R18 tires, it seems like there’s very little room between the inner tire wall and the suspension strut.

Quick reply while I have a sec! Honestly, you're 100% right to be cautious about that clearance on the Disco Sport. It’s tight—I mean, dangerously tight if you use a standard 12mm or even some 9mm links. I’ve seen people shredded their ABS sensors because they thought "4WD means I can use whatever."

For your situation, if the premium external mounts feel like too much of a hit to the wallet, I would suggest looking into the Pewag Servomatik RSM 76 or the Thule CB-12 097 if you can find them, but specifically for your 235/60 R18 setup, the safest "budget" bet that isn't a total external mount is the Rud Centrax V S897. It’s technically an automatic tensioning chain that doesn't require any space behind the wheel because it grips the tread and the outer face only.

One technical tip: make sure you actually disable the "DSC" (Dynamic Stability Control) when you're starting off in deep snow with chains on. The system might try to cut power if it senses the different grip levels, which is super annoying when you're trying to maintain momentum on a pass. Also, double-check that you're fitting them to the front wheels on the Discovery Sport—Land Rover specifies the front for traction and steering authority. Be careful with those 9mm slim chains; even they can occasionally graze the strut under full compression. Personally, I'd stick to the specialized low-clearance models. Hope this helps and have an awesome trip!