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I have 245/45/20 tires on my new 300C. If I change to 245/50/20, same brand and model of tire, will I notice any difference in ride comfort?
 

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Unless the difference is extreme, I doubt you can actually tell. All else being equal, a taller sidewall should be more comfortable as it should have more "flex". A taller sidewall would also affect handling/cornering for the same reason. Trick is that "all else may not be equal", even within the same line of tires. They might compensate by making the sidewall a little stiffer...who knows? The "50" tire is almost an inch taller than the "45" so you'll travel a little faster than your speedo indicates (see Tire Size Calculator). IMHO, Continental makes the best riding/handling tires.
 

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I ran 245/50/20 for a while to close the fender gap by 1/2" as well as add 1/2" more ground clearance. I could not feel any difference in ride comfort. Note: I had to grind off the front upper ball joint stud flush with the nut, as it rubbed on the tires.
 

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Discussion Starter #4
I ran 245/50/20 for a while to close the fender gap by 1/2" as well as add 1/2" more ground clearance. I could not feel any difference in ride comfort. Note: I had to grind off the front upper ball joint stud flush with the nut, as it rubbed on the tires.
Wow! That is very helpful, thanks!
 
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