Finally tracked down those prototype cars I saw last month

Been down the same rabbit hole myself a couple of summers back at a club round near me. Some open-cockpit sports racers turned up that were clearly a step above the usual club cars, and I burned a whole evening on image searches getting nowhere. What finally cracked it for me was the most obvious thing I'd overlooked: the event programme had the full class breakdown and entry list in the back, and the answers were right there on paper for a couple of quid. Now I always grab one before I start guessing online.

The other trick I've picked up since is to walk the paddock during the lunch break instead of trying to ID cars from the fence. Most teams are happy to chat when they're waiting around between sessions, and the mechanics usually know exactly what series they're in and where the class sits on the ladder. Got a ten minute chat about a chap's rear wing setup once that taught me more than hours of searching.

One thing I'd add to your tyre supplier approach: the public address commentary between sessions usually names the class and the sponsors, and you can often find the commentary team's schedule posted on the circuit's site beforehand. Worth a look before September so you can walk in already knowing what you're watching.

I had a similar moment at Donington a while back, except I solved it the lazy way. Instead of trying to identify the cars from memory afterwards, I just wandered into the paddock during the lunch break and asked one of the mechanics what was running. He talked my ear off for ten minutes about the chassis builder, the engine supplier, and how the whole thing worked, then handed me one of those free postcards the teams leave out on the table. Took about four minutes versus my usual three evenings of fruitless searching. The other thing that worked for me was checking the windscreen and side windows. Nearly every series makes cars carry a sticker with the class name and a competition number, and at the lower levels those stickers are ussually pretty legible when the car is parked. I snapped a photo of one stationary car and had the answer that same night. If the September round is anything like the events I've been to, the paddock access is probly included with a general ticket anyway. Get there early, have a look around before the first session, and you'll likely be chatting with someone who can tell you the whole history of the category. Also worth grabbing the live timing sheet if they do one, since those usually list the class abbreviations right next to the driver names.

Sounds familiar, I did the same dance at a round a few years back. What cracked it for me was a photo I'd taken of the side of one of the cars. Zoomed in on the smaller sponsor stickers along the sidepod, picked out one for a local business, and found their social page congratulating 'the team' on a result. From there it was two clicks to the series name and the full calendar. Sometimes the cars are literally wearing the answer, it just needs a decent zoom and a bit of patience with the small decals nobody photographs on purpose.