I look around and there're lots of discussion about this but I haven't see anyone try 245/50/19 for the stock 19.
According to tire rack 235/50/19 and 245/50/19 will fit the 19 OEM . The result I got from the miata tire calculation site seem like the 245/50/19 fit best for the 19 OEM with only -0.3% on the speedo compare to -1.7% for the 235/50/19. The 235/55/19 is off too at +1.5% (tire rack not recommend this size). Price wise they're almost the same. The 245 also has almost the same sizewall height as the stock Toyo. I'm wondering how much this size would affect MPG, acceleration, cornering?
According to tire rack 235/50/19 and 245/50/19 will fit the 19 OEM . The result I got from the miata tire calculation site seem like the 245/50/19 fit best for the 19 OEM with only -0.3% on the speedo compare to -1.7% for the 235/50/19. The 235/55/19 is off too at +1.5% (tire rack not recommend this size). Price wise they're almost the same. The 245 also has almost the same sizewall height as the stock Toyo. I'm wondering how much this size would affect MPG, acceleration, cornering?