I just rode from Changwat Phayao to ChiangMai via Doi Saket. There is a section where the road is under construction, and with heavy rain, the road is extremely slippery. I was riding 2018 Ninja 650 with Continental Trail Attack 2, and the rear wheel was sliding freely. Fortunately, following cars noticed my dilemma and gave me a wide berth. Luckily, I made it through. If I had known the road condition, I'd probably take the road to Lampang and on to ChiangMai.