Wheel Upgrade to 20s...Need advice

AllForTheCash · 04-30-2011, 04:41 PM

Quote:

Originally Posted by daisuke149

Why not buy a Z for that?

Roll with the 20's

. You should ALWAYS becareful driving with expensive rims anyway...a pot-hole that is large enough to wreck a 20" will most likely do the same to the 19" with low-profile tires.

AllForTheCash · 04-30-2011, 04:43 PM

Quote:

Originally Posted by VCuomo

If you have 18" rims and are going to 19" or 20", that will increase the car's bottom clearance.

KillerBee370 · 05-01-2011, 10:45 AM

Quote:

Originally Posted by daisuke149

Why not buy a Z for that?

Hey listen I'm not saying you can't. I mean people are gonna do what people are gonna do and I'm the last one to tell them to do with their money. I'm merely suggesting that there are other options for a blingy cruiser rather than transforming a sport car born for another purpose.

It's like visiting the DUB booth at a car show and seeing their assortment of supercar "cruisers".

LunaZ · 05-01-2011, 04:17 PM

Quote:

Originally Posted by daisuke149

...you just have to be more careful and slower.

If I was going to be more careful and slower, I could just get a used Camry for the price of a nice set of 20's and the rubber to go on them.

daisuke149 · 05-01-2011, 04:26 PM

Quote:

Originally Posted by KillerBee370

Hey listen I'm not saying you can't. I mean people are gonna do what people are gonna do and I'm the last one to tell them to do with their money. I'm merely suggesting that there are other options for a blingy cruiser rather than transforming a sport car born for another purpose.

It's like visiting the DUB booth at a car show and seeing their assortment of supercar "cruisers".

Quote:

Originally Posted by LunaZ

If I was going to be more careful and slower, I could just get a used Camry for the price of a nice set of 20's and the rubber to go on them.

Since when did driving slower and carefully become a bad thing on the streets of denver? Would you guys prefer he race his car around town cus its a sports car?

I hope both of you always redline your cars, hit turns fast, power out and go hard on the brakes. Cus its a sports car, why drive it any different. I mean if you arent gonna drive it like i said above in the city of denver, go buy a camry.

Id be careful myself with any wheels i have. I sold my sports rays after 7 k miles no cub rash on em. I always go over bumps slowly even though im not lowered. Should i trade my car for a camry too? Or is it possible i wanna take care of the car and then when i go to a track or mountain cruise (just got back from one) i can drive it "like a sports car". P.s people throw that phrase around alot and i bet they dont even really think about what they are implying.

LunaZ · 05-01-2011, 04:36 PM

I hate when I forget to add the "don't-take-this-comment-so-seriously-laughing-out-loud-emoticon".
That said, I drive my Z like a sports car and I drive my beater truck like a Camry, so your hopes are realized, at least on my end.

daisuke149 · 05-01-2011, 05:03 PM

Quote:

Originally Posted by LunaZ

I hate when I forget to add the "don't-take-this-comment-so-seriously-laughing-out-loud-emoticon".
That said, I drive my Z like a sports car and I drive my beater truck like a Camry, so your hopes are realized, at least on my end.

how about you not take this comment seriously!!

I drive my Versa faster than I drive my Z on the streets. Actually im serious. I do

VCuomo · 05-01-2011, 05:04 PM

Quote:

Originally Posted by 6MT

So the extra 1"-2" between the axle and the ground doesn't slightly raise the bottom of the car as well? What does it do, just compress the springs extra? Seriously, please explain.

LunaZ · 05-01-2011, 05:08 PM

Quote:

Originally Posted by VCuomo

So the extra 1"-2" between the axle and the ground doesn't slightly raise the bottom of the car as well? What does it do, just compress the springs extra? Seriously, please explain.

When the diameter of the wheel is increased, the aspect ratio of the tire is reduced. The aspect ratio is a number that describes the height of the tire's sidewall relative to the width of the tire.
The goal is to end up with the outer diameter of the tire being the same as what it came with from the factory regardless of what diameter rim you put on the car.

daisuke149 · 05-01-2011, 05:12 PM

Quote:

Originally Posted by VCuomo

So the extra 1"-2" between the axle and the ground doesn't slightly raise the bottom of the car as well? What does it do, just compress the springs extra? Seriously, please explain.

Quote:

Originally Posted by LunaZ

When the diameter of the wheel is increased, the aspect ratio of the tire is reduced. The aspect ratio is a number that describes the height of the tire's sidewall relative to the width of the tire.
The goal is to end up with the outer diameter of the tire being the same as what it came with from the factory regardless of what diameter rim you put on the car.

in simpler words, where your adding 1-2" of wheel, your removing 1-2" of tire. if you go with a large side wall, while still going up 1-2" of wheel, then yes it will increase ground clearance, throw off your speedometer/odometer, lower your acceleration, throw off the handling, etc. Generally a bad idea so best deal is always try to make sure that Wheel + tire = same overall diameter as the original wheel + tire. Gotta look at them as a package and not individually.

VCuomo · 05-01-2011, 05:16 PM

Quote:

Originally Posted by LunaZ

When the diameter of the wheel is increased, the aspect ratio of the tire is reduced. The aspect ratio is a number that describes the height of the tire's sidewall relative to the width of the tire.
The goal is to end up with the outer diameter of the tire being the same as what it came with from the factory regardless of what diameter rim you put on the car.

Quote:

Originally Posted by daisuke149

in simpler words, where your adding 1-2" of wheel, your removing 1-2" of tire. if you go with a large side wall, while still going up 1-2" of wheel, then yes it will increase ground clearance, throw off your speedometer/odometer, lower your acceleration, throw off the handling, etc. Generally a bad idea so best deal is always try to make sure that Wheel + tire = same overall diameter as the original wheel + tire. Gotta look at them as a package and not individually.

Gotcha, but actually I was assuming that only the rim size was being increased. So it is assumed that you always decrease tire profile (aspect ratio) to match the original wheel diameter when you increase the rim diameter? I've seen a lot cars where it appears that the tire profile wasn't decreased enough to make up the increase in rim diameter.

daisuke149 · 05-01-2011, 05:20 PM

Quote:

Originally Posted by VCuomo

Gotcha, but actually I was assuming that only the rim size was being increased - is it assumed that you always decrease tire profile (aspect ratio) when you increase the rim diameter?

generally yes. Some rare occasions people will change the side profile as well but its generally for a specific purpose and they do it on purpose vs just happened.

VCuomo · 05-01-2011, 05:23 PM

Quote:

Originally Posted by daisuke149

generally yes. Some rare occasions people will change the side profile as well but its generally for a specific purpose and they do it on purpose vs just happened.

Thanks for the info guys! The facepalm and wtf emoticons weren't nearly as informative!

ImportConvert · 05-01-2011, 06:52 PM

Quote:

Originally Posted by VCuomo

So the extra 1"-2" between the axle and the ground doesn't slightly raise the bottom of the car as well? What does it do, just compress the springs extra? Seriously, please explain.

Bigger rim=shorter sidewall. That way all these people driving donk'ed out Z's don't exactly LOOK like they gave up all that traction, braking, and ride-quality.

daisuke149 · 05-01-2011, 06:57 PM

Quote:

Originally Posted by ImportConvert

Bigger rim=shorter sidewall. That way all these people driving donk'ed out Z's don't exactly LOOK like they gave up all that traction, braking, and ride-quality.

because wheel size is the only thing that determiens those. Not the make/model of tire, the suspension modifications, or any brake mods. Just the wheels.

in that case is 19" the universal best grip/braking/ride quality wheel? Or is it any 18" wheel?

P.S do explain how someone going from base 18's with advan sports to maybe a 20" wider wheel with better tires is "giving up braking/traction"

05-01-2011, 04:36 PM	#21 (permalink)
LunaZ A True Z Fanatic Join Date: Mar 2010 Location: Vagabond Posts: 6,704 Drives: Project: a white one Rep Power: 512	I hate when I forget to add the "don't-take-this-comment-so-seriously-laughing-out-loud-emoticon". That said, I drive my Z like a sports car and I drive my beater truck like a Camry, so your hopes are realized, at least on my end. __________________ 2009 370Z Sport/Touring/Navigation \| see my journal for mods facebook: Be my friend... or not.

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