Not sure why this would be the case. Even if you increased the size of the wheels, the diameter of the wheels & tires would remain the same (since the tires would become thinner) - I make the assumption that you will get proportionately sized tires). Also, if you get larger wheels that weigh the same as your smaller wheels, it should not affect the suspension a bit. I've been running larger wheels on most of my cars without affecting the suspension a bit.gloa2000 wrote:I would only go upto 19s, since EX were designed to have 17s and 18s as an option, stock suspensions were built to carry 2 inches above its standard wheels anything above its standard size will weaken the performance of the suspensions/alignments make sure to get wheel/suspension professionals opinion before you simply add 20s on your car and mess up the suspension and do realignment on all 4 wheels, I messed up my suspension of my Maxima 3 mos of driving with 19s in it(their standard size of the wheels were 16s).
Tire side walls are springs, you go to a lower profile you change the spring rate, which changes your suspension.Dr. Bombay wrote:
I've been running larger wheels on most of my cars without affecting the suspension a bit.
Lets think of it this way, to keep your wheel and tire overall diameter the same, you would have to get a low profile tires, low profile tires have way less rubber giving direct shocks to our suspension, I experienced this with my old car even with smaller overall diameter(my speedo was pointing faster than i was going) EX's suspension is not built to hold bumpy low profile tires. You would need firmer suspension to cover that bumpy feeling, as we know EX with 17 wheels drives much smoother in low speeds/bumps than 18s.Dr. Bombay wrote:
Not sure why this would be the case. Even if you increased the size of the wheels, the diameter of the wheels & tires would remain the same (since the tires would become thinner) - I make the assumption that you will get proportionately sized tires). Also, if you get larger wheels that weigh the same as your smaller wheels, it should not affect the suspension a bit. I've been running larger wheels on most of my cars without affecting the suspension a bit.
the whole point.jmess wrote:
Tire side walls are springs, you go to a lower profile you change the spring rate, which changes your suspension.
The spring rate is a characteristic of the suspension (i.e. how resistant a spring is to being compressed) and not of the tires. I agree that moving to lower profile tires will make you feel the bumps on the road a bit more, but the cars suspension will remain the same.jmess wrote:
Tire side walls are springs, you go to a lower profile you change the spring rate, which changes your suspension.
I agree the ride will feel more bumpy with low profile tires, but I was responding to your statement about moving to larger wheels messing up the suspension to a degree where realignment was required.gloa2000 wrote: Lets think of it this way, to keep your wheel and tire overall diameter the same, you would have to get a low profile tires, low profile tires have way less rubber giving direct shocks to our suspension, I experienced this with my old car even with smaller overall diameter(my speedo was pointing faster than i was going) EX's suspension is not built to hold bumpy low profile tires. You would need firmer suspension to cover that bumpy feeling, as we know EX with 17 wheels drives much smoother in low speeds/bumps than 18s.
Usually if you move to larger wheels, you get lower profile tires and thus keeping the diameter of the wheels + tires approximately the same. But you are right, if the diameter of wheels + tires change, it will throw off your speedometer slightly. Here's an excellent tire size calculator that will also tell you the speedo error too.rianklong wrote:If the wheels (and tires) get bigger doesn't that throw off your speedometer/odometer too?
It may affect the handling and put more strain on the wheel bearings/stock suspension system and will void the suspension section warranty, unless you put back old wheels/tires before visiting Infiniti service center.Dr. Bombay wrote:
I agree the ride will feel more bumpy with low profile tires, but I was responding to your statement about moving to larger wheels messing up the suspension to a degree where realignment was required.