JO8

hahaha


Great thread guys. Differents opinions makes great discussions

JO8

Hey Ezzy, if you can read this topic, please let me know about the Australian guy who put 22's at the rear.

Mugatu says that 30's fits, but i don't trust him he's too jealous

I wont go bigger than 22, i promise.

army_rx8

i agree........you got ot love the internet. hehe i'm waiting for some one to set a tiem and place to meet after school to RUMBLE..hehe ah that woudl be clasic..and good news i got my digital camera back tso i can document it all

moRotorMotor

Thanks for the great read, I really needed it. :D As for your car... It's yours, you can do whatever you want to it. More power to you man.

PUR NRG

Because he claims 20" rims have absolutely no effect on performance.
Yet he contradicted himself by saying this: Trying to compare dynamic handling is apples to oranges since his new tires are (presumably) wider than stock but even without trying larger wheels I can definitively state they offer worse straightline acceleration performance compared to stock. How much worse may be open to argument but worse nonetheless.

• Larger overall tire diameter (with everything else equal) means less effective torque. Less torque means slower acceleration.
• Heavier rim and tire weight means more torque is required to achieve the same rate of acceleration. Since torque remains the same this means slower acceleration.
• Bigger rim diameters means the bulk of the rim's weight is farther from the center. Moving weight farther away results in a higher polar moment of inertia, which again means more torque is required to achieve the same rate of acceleration. If you don't know what "polar moment of interia" means do a google search. Not only is the weight farther away, there's more of it since you need more metal to make a larger circle.

All three items have a synergistic effect which worsens performance more than each item alone. You can try arguing otherwise but you're arguing against physics.

PS. I've know the GTechPro. It's a toy that amateurs who play at performance use.

Mugatu

iTrader: (1)

but why oh why would our devoted blingman JO8 care about 0-60 times when he doesn't care that his 20" rims are only for daily driving..................

JO8

Untrue. I claim that i didn't FEEL any difference. I might feel wrong, but still i feel what i feel !



Untrue. Please notice the ( in theory )

You may be good in physics, but your reading is poor.

JO8

Ok guys. Enough theory.


GIVE US THE NUMBERS.

0-60 mph stockers ?
0-60 mph "pimp 20's" ?

You want to demonstrate (or convince) be that i'm an ignorant-pimp-moron ?

No problem. But do your job better, blabla is not enough.

PROOF, ACTUAL RESULTS, REAL TESTS NEEDED

canaryrx8

iTrader: (3)

Well okey dokey, I went from 15s to 18s on my '97 S10 when I had it, that was a f-in change too, it threw off my speedo, i had to upgrade the brakes (well actually I might have gotten by, but with the extra weight they added it sure helped) and my truck was slower, did it ruin it? no. was it worth it? I thought so as the larger rear tires (width wise) were very helpful in bad weather. does that make me the the super duper bad *** pimp? heck no. I don't think anyone on here is claiming that 20s will ruin your ride, i just think a lot of people think they're too big and too heavy for such a light and nimble car. Maybe you can't feel the change, but that doesn't mean it's not there. The wind is blowing outside right now but I can't feel it, does that make it not there as well? I think you're just justifying your purchase, and that's crazy, if you like them you shouldn't have to justify them, just enjoy what you got and to heck with what people think. A few people posting on a forum aren't going to change anyone's mind anyway, if more people want 20s they'll get them, no matter what anyone on here says. lighten up buddy, after all, they're just wheels on a car anyway

DreRX8

I thought it was common knowledge that bigger wheels after a certain size will decrease performance? The weight alone will slow your car down, your speedometer is wrong now also. The wheels don't really look bad (not my taste--I like chrome but that style isn't doing it for me)--but your performance is definately compromised--did you weigh those rims?

canaryrx8

iTrader: (3)

It is common knowledge for most people, just some people live in denial :D

XDEEDUBBX

Oh where's denial? I want to move there too!!

MazdaManiac

iTrader: (3)

Well, my 2¢ -

If he likes them, he likes them. Why give him crap? There is no accounting for taste because it is 100% subjective.

I bet NONE of us have actually G-Tech'ed or dyno'ed before and after wheel changes. I know I haven't.
I run 19" wheels because I like them. I went out of my way to get wheels that had less mass than the stock wheels to help counteract the inertial issue. Fact is, I can discern absolutely no difference between the stock wheels/tires and my current setup except my wet traction is better. That is the tires.
At 99/100 on a closed course, the car handles the same and the ride is unchanged.
Will it dyno lower? Who knows.
I have a turbo to make up the difference.

PUR NRG

Not according to the College Board. Scored 800 in verbal. My IQ is in the 135 range too. But enough dick waving. Let me put it to you in your own words:
Claiming you don't feel any difference is not the same as saying you definitively didn't lose a bit of whatever people said you were supposed to lose. The former statement is basically what I said in my first post. It's the latter statement that's untrue.

PS. In the words of Bogart, stop trying to attack other people's strengths through your own weaknesses. Mugatu earns a decent wage and I'm not an idiot.

Mugatu

iTrader: (1)

Thanks, PUR NRG

Kel Rx8

braking is not as stock,I feel a difference but not major.
but ride is perfect and my car hooks better than stockers,but mainly cause of the tires.
some of you are forgetting that mazda designed the rx8 with 20" wheels
but JO8 22'' your nuts

MazdaManiac

iTrader: (3)

No, they didn't. The RX-8 was designed around and was supposed to roll into production with 19" wheels but they pulled back to 18" at the last second (end of 2002) because there wasn't enough availability of tires in that size at the time.

canaryrx8

iTrader: (3)

it's right down the street from where the people are that believe the RX8 is not affected by larger diameter wheels :D and no, it's not the river in Egypt (hah)

theCATALYST

Hey Kel RX8,
I know you have probably answered these questions a few times on this forum, but can you answer them for me without making me look it all up? I really like your set up, great looking car. What are your wheel sizes and offsets, and did you have to roll the fenders? Thanks for any info.

To anyone looking at 20's, this is the way to go. Classy and sexy all rolled into one car. Good show..........

Kel Rx8

our creator's first dreams
designed around 20'' but only a concept.
http://media.ford.com/rx_evolv/
theres tons of stories on the original design and all have 20 wheels.

theCATALYST
im gonna shot you a P/M in the morning, thanks.

EZZY

trying to be neutral here, even though im one of the very frist few ppl got the 20's here in australia

anyway, there ARE differences between factory 18's and aftermarket 20's..

- physical size difference, but you'd try to keep the overall diameter close to factory, therefore the speedo readings are similar

- weight difference, but you'd be surprised with today's technology, it is possible to get a set of 20's with similar weight to the factory 18's. with 20's, you are carrying less air, and therefore less water particles.... correct me if im wrong :p

- ride comfort, 18"s have thicker profile, therefore it'd be more comfortable than 20"s with thinner profile, it also depends on what type of roads you travel the most. there are certain roads here in sydney i will not get on, even if i have to make a detour.

- braking, there will be a difference, but not big enough to be dangerous. +2 size upgrade is very common amongst high-end car companies. my other mazda came with 14" factory steelies, and i have upgraded to 15's, then 17"s, then 18"s then 19"s. as soon as i got to 17" combo, i have done a minor brake system upgrade, and when i got the 18"s, i upgraded again, but thats a +3/+4 size upgrade, similar to the ones mentioned here from 15" to 18".

i have 20"x8.5" and 245/35 tyres all round, lowered springs and adjustable swaybars front and rear, im happy with it, and for me its a perfect daily driver combo. if im taking the 8 to a track day, then i'd stupid not to put smaller wheel/tyre combo on it.

some points mentioned in this thread are vaild, but some are shallowminded.
some ppl asked me why did i put 20"s on my car, i always told them "because i can".

anyway, better go now

ps. JO8, the one with 22"s looks funny. he had 20"s front and 22"s rear combo, and the 8 sits on an angle. the rear looked weird. the main reason he did that is because he has a wheels/tyres business here in australia, and he uses the 8 as one if his promo cars

army_rx8

that's it i so have you beat in teh sat's...i scored a 950............in my mind :D lol no i suck at that sort of thing......and IQ test only judge how good or intelligent you are based on the people who made the test. so saying that i'm kicking it at 126 vs. captain made the test

wish i had a 800 in the verbal...but if i did i'm sure my spelling woudl be loads better. l0ol and we all knw othat isn't the case.

blinkingboxcar

army_rx8, didn't you just get new tires, bigger than the factory tires?

army_rx8

hehehehe...yes instead of the stoke 225/45/18's i got 245/40/18...wider tires with a sligthly lower profile......but same rims....this thread is about rims baby i got 18's :p

hehe and by the way congrats on the first counted post :D

i just don't have the d'oh for the bling bling hehehehe

blinkingboxcar

thankfully, otherwise you'd prob have to find a new significant other...good luck with that padunkadunk search! oh, and thanks for noticing my first officially counted one, even though i've posted about 5 times. quick reply's don't count?