M's Machine Works Porsche Cayman GT3 - Attack Tsukuba NA Class Full Super Lap Run

With the FF drivers, Ton and Asai, sitting this season out, the M's Machine Works Porsche slotted in as the fastest NA Class competitor at Attack Tsukuba 2025, coming into this season with a best of 55.28. Given the updates over the off-season, it was highly anticipated that Yuta Kamimura would pilot the 987 to a new NA record time.

New billet aluminum rear suspension uprights, an active DRS style GT wing, and several other weight reducing changes put the GT3 in a good fighting position to break into the 54s this year. Up until this year, the car was tuned for 295 square setup of Advan A050 GS, but somewhere along the line Mizumoto made the decision to swap over to the new Shiba Tire R50 compound in order to take advantage of the option of a 335 rear tire. The late decision didn't give them much test time, and the matter was compounded (no pun intended) by the fact that Shiba Tire had only yet developed the 'M' compound of the R50, and are still developing their 'GS' equivalent tire. Mizumoto is certainly playing the long game, betting that the new R50 GS will be just as quick, if not quicker, than the current A050 GS offering, with the added bonus of being able to run a tire wider than 295.

Despite having only one test in December and one in January, Yuta was able to pilot the Porsche within a tenth of their current best. After watching the video you'll see just how much input is needed behind the wheel to manage the car, making their current times even more impressive. I can't comment directly because I've yet to talk to Yuta about it, but it seems maybe a bit unstable under hard braking.

While they weren't able to make any progress on the NA record this season, the M's team is still as determined as ever to retake the class record and break into the 54's. This will still be one of the most anticipated drivers of next season, and I'll be looking forward to hearing what comes next for the build. M's will be celebrating their 35th anniversary in March, and it would be a great present to achieve the record in the same year.

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