Spare tire. For 987

I have a 2007 cayman . 18 inch wheels. What is the best solution for a spare tire. ? 17 inch 986 spare ? Will it damage the tranny if you run slightly smaller tire ( 17 inch spare ) to get to home. If you flat the rear i have heard you should move the original front to the back and our spare on front. Thanks.

Shawn in VA (USA)

Any sealant (including factory) renders the tire trash. I carry a special plug patch kit and tire slime. I'm not going to want a patched tire on my car anyhow so I consider wrecking one the cost of doing business, especially if it lasts to a shop with a replacement.

Exactly, @Toadster - I myself just got a 17" 986 spare that I'm going to throw in the frunk for those long trips -- and I'm running 18". Key thing is to shut PSM off before installation; the 17" will make more revolutions than the 18" will on the other axle. Yes, the spare goes on the front. Be mindful that the spare is secured, so it doesn't bounce up and damage your frunk lid; I haven't determined the right solution for that yet. Also packing a small homemade tool kit to supplement stuff, and a sheet to throw on the ground and to then wrap the flat tire with to store in the passenger seat (as it won't fit in the trunk). With this, YMMV (I drive a 6MT) but that's how I've decided I'm going to fly. Local trips will be to just call my insurance carrier and just have it towed home. One final thing -- In the garage, I recently did a 10 minute test to ensure I could break the lug bolts without a breaker bar and could operate the jack. Better to know how to use your gear ahead of time, than alongside the road where it could be dark and you're stressed out. Just my 2 cents, and let's hope we never have to use these.

Cayman Spare Tire Kit Check out the deal on Cayman Spare Tire Kit at Suncoast Porsche Parts & Accessories www.suncoastparts.com Spare tire kit from the factory. If the rear tire is flat you take one of the front ones off and move it to the rear and put the spare on the front as the spare tire won't work with the rears

I’ve thought about all this before… now, where do I put my 10.5/295 wheel that’s flat?

In the passenger seat.

And call a Uber for my wife? 🤣 I’ll test fit a 18x10 off my C-class and see how that fits. If I remember it was tight

Thank you. !

I like your approach. Anything "special" about the plug patch kit? Thanks.

BTW - A patch kit is a great idea to stow in your kit, regardless -- assuming the flat is caused by a puncture (say, a nail/screw -- which is common). If it's sidewall damage (pothole), it's not going to help. I've generally kept one in my kit for years, and I think I spent less than $10 on it on Amazon . Just keep in mind that you'd need to jack the car up, remove the tire, and keep your fingers crossed that you can find it the puncture with good daylight (not a procedure you want in the dark). If it's in the tread, you can actually save the tire (assuming it's not a run-flat -- which we don't in our 98X and 99X cars). You remove the screw/nail, and use the inexpensive patch kit to plug the hole. Assuming your tire compressor is still in your car and working, you're better off deflating the tire first before patching the tire. If not, you're going to want to work quickly. BTW - After a pothole flat about 18 months ago, I've been a TPMS fan as it gives me a warning if I caught a flat -- which gives me the extra time to safely pull over and potentially prevent rim damage (and even potentially save the tire). I've disabled TPMS before, but re-enabled it as it can be a life saver. Although these patches are supposed to be permanent, I'd probably just bring the patched tire to be redone at my local tire shop for peace of mind -- where the tire was removed and rebalanced. Again, sidewalk damage = end of tire and end of story. Here's a link if you're interested in plugging your tire: https://www.4wheelparts.com/the-dirt/how-to-plug-a-tire/

Unlike the OG sticky strips shown in Foodbiker's tutorial. The kit I have has a mushroom which resides inside the tire upon proper deployment. There's a tool that keeps it folded, once you are inside the tire you twist the shaft to seat it ( in a perfect world). I've never used it hope I don't ever have to. A straight band as shown in Foodbiker's tutorial and a bottle of tire slime should get you down the road for all but the most severe damage. Plug first because if that holds skip the slime. In fact if I had to put air in it sporadically say every gas stop only for say five pounds? I'd still skip the slime and associated mess. I would not use said repair as a permanent solution even on a DD, it's not a repair of great integrity whether mushroom or flat strip. Now, if done off the rim at a tire shop? I trust that for my DD spare and their repairs are more robust than a roadside jimmy kit.

There is one fix that Michelin allows the use of without downrating the tire one speed grade - that's the patch/plug, done from inside after dismounting the tire, and vulcanized in place. I've used these a number of times on motorcycle tires, and when I removed the tire for replacment (worn out) I've tried to pull the patch-plug out of the tire. It was impossible, it had become part of the tire.

I secure my spare in the trunk with two bungee cords. And it works very well.

Were the D rings there already?

Here is the emergency tire repair kit that I carry in my 981 CS as I often make trips in the Hocking Hills with areas of no cell service. It includes an eBay 986 jack and an up to date OEM type tire goop, plug kit and a can of last resort fix-a-flat. I also carry my Milwaukee M12 tire inflator and portable wheel chocks. The breaker bar is expandable for extra leverage. Fifty years ago my summer job was in a Sohio station that did tire repairs and the tire plug is my choice of emergency repair if not on or close to the side wall and the goop of fix-a-flat “might” work on a small side wall or close to side wall repair. I consider any of these as temporary/emergency repair to get back civilization where a proper repair or a new tire can be found. Jim

Here is a close up picture of the eyelet.