LexFather

http://www.caranddriver.com/features...sted-tech_dept

whoster

great stuff!

I've always wondered what the cost of Ds on the bish be.

GSteg

iTrader: (15)

I think I saw some similar comparison from C&D back in the late 90s. Interesting read

IS-SV

Supersized is not good, especially with a marginal powerplant.

Mbenz528i

I am getting a set of 15" wheels and I will keep them clean!

Interesting. Thanks for posting.

bagwell

great find Mike!

great info!

ALeX300

iTrader: (3)

true. Also about 7,8 years ago there was a MotorTrend article about 24"/23" versus stock on Navigator i believe. In that one they hated harsher ride and stopping distances increased by about 15ft.

G Star

iTrader: (2)

I wonder if differences will raise marginally as horsepower increases.

But the cut in performance is not that bad, the loss of 2MPG bothers me a bit.

Jetfire

iTrader: (3)

sometimes you have to give up performance for looks. form over function.

makes sense considering you're adding 14 lbs more per wheel.

IS-SV

Notice those wheel and tire weights jumping up drastically with each version, that's the biggest contributor to degraded straight line performance and MPG.

Pearlpower

iTrader: (2)

Weak article, what would have been interesting would be a test of larger yet lighter wheel vs the next size down. We all know the heavier the slower with associated decreases in performance/MPG.

Whereas some claim weight is everything, others will counter that the larger yet lighter wheel would be hampered by the rotating mass being further out, therefore offsetting any performance gained with the lighter wheels.

Byprodrive

iTrader: (1)

Increasing the weight of your wheel & tire combo is probably the worst place to add weight if acceleration, braking, handling, or ride comfort is important to you. Increasing the diameter of your wheels allows you to reduce the sidewall height of the tire without altering the diameter. Reducing tire sidewall height increases road "feel" whether wanted or not & reduces impact resistance. (leading cause of sidewall "bubbles") Increased wheel diameter also increases rotational inertia which resists acceleration & deceleration. Moving the mass or weight further from the axle or axis (bigger wheels) increases the leverage the mass has to resist change (acceleration &/or deceleration).

JessePS

Pretty interesting article.

Just imagine a Lamborghini riding on fifteens bahaha

votru

iTrader: (7)

Good info .

jadu

iTrader: (42)

glad they did this article