Courier CT now on 215/55/17s, two sizes taller than stock
08-25-20, 12:48 PM
#16
Lexus Test Driver
Rubbing while cornering with tire/wheel sizes/specs that are at the limit can be very dynamic and not present itself every time. It may happen under just the right conditions as the wheel toes/in and out and flexes over a bump. So that may be why it's hard to get it to replicate every time. you can do the old school trick of putting masking tape on the inner edge of your fender/bumper lip to see if it touches. you'll know right away.
The following 2 users liked this post by E46CT:
Raidin (08-26-20),
Vegasaurus (08-26-20)
08-26-20, 11:37 AM
#17
there's so many variables, who knows.
But when I need new tires I'll probably get 50s. Can't hurt, right?
08-26-20, 04:25 PM
#18
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Thread Starter
But E46CT is right, it will only happen on rare occasions. Vehicle position and road surface play a big role.
08-26-20, 06:19 PM
#19
When I went from 45 to 50 for sidewall, my speedometer was actually dead on. When I went from 50 to 55, I am now running slightly faster. After 50 MPH, I have to set my speedometer 1 MPH less. To travel at 60 MPH, I have to set my speed to 59 (GPS reports 60-61), sometimes 58 (GPS reports 59-60).
08-27-20, 09:16 AM
#20
Lexus Test Driver
a 55 tire vs. a 45 tire typically adds about 2 lbs per wheel according to tire rack. Something to consider as well as to your overall rotating mass. More weight towards the edges also gets heavier at speed due to centrifugal force. so an extra four pounds of mechanical resistance your hybrid powertrain has to overcome.
if your priority is comfort though, it's probably a nice upgrade, but at the expense of a small fuel economy hit.
if your priority is comfort though, it's probably a nice upgrade, but at the expense of a small fuel economy hit.
08-27-20, 05:04 PM
#21
Definitely not concerned about comfort, as I do prefer to feel the road. More just concerned about having the "right" tires on the car for the calibration of the speed. And so it sounds like 50 is that, a middle of 55 and 45.
08-28-20, 08:33 AM
#22
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Thread Starter
a 55 tire vs. a 45 tire typically adds about 2 lbs per wheel according to tire rack. Something to consider as well as to your overall rotating mass. More weight towards the edges also gets heavier at speed due to centrifugal force. so an extra four pounds of mechanical resistance your hybrid powertrain has to overcome.
if your priority is comfort though, it's probably a nice upgrade, but at the expense of a small fuel economy hit.
if your priority is comfort though, it's probably a nice upgrade, but at the expense of a small fuel economy hit.
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