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Setup ordered!! I'll be in the club next week. Ordered RE11's in 275/30R19 F and 325/30R19 R for the Nismo. Will most likely have the tires installed, take the car to have the AC system evac'd and then to the garage for BP single install. Tires just in time for massive power increase.:happydance:
Tires arrived today. Sending the 275/30's back and waiting for next Wed for the 285's to come Edit** 285 arrived today (Monday) already dropped off at tire shop for install tomorrow morning. Pics to come. |
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The 275 on a 9.5" wheel is fine, but a 325 on a 10.5" wheel is too much for me. i would want an 11.5" to a 12" wheel for that size. |
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To anyone that wants to install stretched and/or really low profile tires on their wheels on anything by a show car, don't. Even with forged wheels, you need adequate tire sidewall to cushion the blows sometimes experienced on regular roads. I know from experience...I bought 4 brand new front 19x9.5 +40 2014-2015 Z34 Nismo FORGED RAYS wheels for my Acura TL, then fitted 275/30R19 Nittos on them...and now, after a year of daily driving, when I put the car on the lift, 3 of the 4 wheels are slightly eggshaped. No such thing with my beefy tires on my Z...trust me, NO wheel is strong enough for daily driving with rubberband tires. Whoever doesn't believe me can experience it first hand. It is much better for the ride, your wheels, your tires, your suspension, your kidneys, etc. to have a respectively narrower wheel with a wide, meaty tire than to have a wide wheel with a respectively narrow, skinny tire. |
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Hi VinceThe1,
From a rim protection stand point, I agree with you. From a performance stand point...I do think that there's a diminishing return. I've always thought tread width should closely match the rim width (measuring inner barrel, not lip to lip). Measurement #'s from TireRack: Tread Width - 285/35/19 RE11 has tread width of 10.4", which practically equals the Nismo rear rim width. The measurement is from the tire mounted on a 10" rim, so mounting it on a 10.5" inch would give it a slightly bigger tread width #. Section Width - this is sidewall to sidewall width, same tire is 11.4". I think Nismo rears is around 11.5" lip to lip. Looking at my rears, the tire sidewall looks to be flat, if not at a ever so slight angle, so I see your point on rim protection. However, with 325/30/19, tread width of 11.5" was measured on a 11.5" rim. Mounting it to a narrower rim will decrease the actual contact patch. I don't know the exact math, but I want to point out it the tire treads across the width aren't getting evenly pushed to the ground, hence not quite effectively being utilized. As far as ultimate grip goes, 325 probably still beats 285 on the same 10.5" rim, but I think mounting overly wide tires onto relatively narrow/skinny rim width that's out of range shouldn't be used as a blanket conclusion IMHO. My theory is for street tires. Slicks are something else. |
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As far as traction goes, wider tire doesn't give you extra traction, the compoind of the tire does. A wider tire gives you a wider contact patch, but a shorter one. Also, even if you go get a larger contact patch you still don't get more traction as the weight of the car just gets distributed more evenly over the lager area so each square inch has less pressure on it so less traction, but it's compensated with the extra surface area. The one true benefit of wider tires is less heat and less stress per square inch = less wear. There are drawbacks too like added weight, easier hydroplaneing, extra cost, and internal wear/skipping on sharp corners (not noticeable for the most part) I chose the wider tires as for me, they have much more benefits than drawbacks. |
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275 or 285 in a 30 aspect ratio would of been way small |
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