What are the best indoor car covers for a Ferrari 296 GTS?

Regarding what #1 said about the Phoenix dust struggle, hes 100% right. In my experience, even the best cover fails if the car isnt perfectly clean first... dust gets trapped underneath. Id suggest the California Car Cover Custom Fit Plushweave Cotton Flannel Indoor Car Cover. Its incredibly soft on the paint and fits your budget. TL;DR: California Car Cover Plushweave is the gold standard for soft indoor protection.

I totally get the Phoenix dust struggle. Its basically fine silt that finds its way into every crevice. If you want a perfect fit for the 296 GTS, you should look into the Covercraft Form-Fit Custom Indoor Car Cover. It uses a polyester knit outer shell with spandex so it stretches over the body lines perfectly. The inside is a heavy sheared cotton fleece that is super soft on the paint. Technically, the high breathability rating is what matters here because it prevents heat and moisture from getting trapped against the clear coat, which can happen in desert climates. Another solid choice based on my experience is the Beverly Hills Motoring Accessories Plushweave Cotton Flannel Indoor Cover. This one is a bit thicker than the Form-Fit. Its basically a 100% cotton exterior with a super dense flannel underside. The logic there is the thickness provides a bit of a ding buffer if youre moving stuff around in the garage, whereas the Form-Fit is more about that tight, aesthetic look. Both should fall right around your $500 budget depending on the current shipping rates. Just a quick tip: make sure the car is 100% clean before you put the cover on. If there is even a tiny bit of that Phoenix dust on the paint when you slide the cover on, youre basically sanding your clear coat. Always hit it with a quick detailer or a fresh wash first. If you need any more specs on the material weights, just ask.

Regarding what #2 said about cleaning, thats the most important takeaway here. Between the fitment #1 mentioned and the prep work, you gotta be careful. I learned the hard way with my last setup... one tiny bit of grit basically sanded my paint. Over the years, Ive found that high-GSM inner liners are the only way to go for long-term safety. Dont skip the quick detailer first.