Will there be a big different if I use 195/50/15 with my stock rims? (the stock tire is 195/55/15)

 

i think the width from the rim to the top of the tire is more narrow.

 

You hit a pot-hole w/ 195/50/15, it'll do some nice damge to your rims than if you were running 205/50 or 195/55.

FYI - don't run Azenis during Seattle's rainy months. You'll hydroplane.

 

I beg to differ. I did bend my rims w/ 195/50/15s where as 195/55/15s were fine 4x4ing over the potholes. And, I did hydroplane (considerable rain drop... not drizzle) with my Pirelli P-zero Assymetrico in Seattle. If it hydroplanes w/ P-zero, why risk hydroplaning with Azenis (absolutely no water channel). In Seattle I would definitely have two sets of tires and rims.

 

I ran 195/50s for about 10K miles with no problems. The speedo was off at higher speeds, but no big deal. Not much tread on the ground though, compared to the 205/50s I have now.

 

The change from 195/55-15 to 195/50-15 will make the speedo (and odo) read roughly 3.3 percent higher at all speeds.

 

shorter revs. i have 195/50-15s with no bends due to pot holes and after shifting at 8K i now land at 6K instead of 5.7K. first gear anyway. B16a w/Y1 tranny.

 

I Like the 195-50-15 rather than the 205-50-15 on my stock R wheels, it ahs better feel

 

Wrong. Changing the size of your tires doesn't change the revs that you land at. That's determined only by the difference between the ratios of the two gears.

 

*edit* you only notice the speedo off at higher speeds

 

What if I use stock tires (195/55/15) at the back and 195/50/15 in front?

 

nsx is correct. 195/50 or even the 195/45 is like the poor man's final drive. you only change the final ratio with shorter tires, not the individual gear spacing. stock 195/55's have a od (outside diameter) of 23.44 inches. a 195/50 has the same width, but a shorter profile (22.67 od) that basically gives you an increased final drive ratio of 4.54 to 1 (assuming you had a stock 4.40 final...blah!) IMHO, a 195 is too skinny for our cars. i would run a minimum of a 205.

 

you will save some weight. You will also reduce the overall diameter of your wheel, increasing your gear ration so the car should accelerate faster, but I don't know if you will notice it. You will also throw your speedmeter off by 2-3 mph/