Nissan GTR 800hp on 21"

Number Nine

Wheels:
ADV10 Deep Concave
21x10.5
21x12.5
Color Matched Center
Gloss Black Lip
Pirelli PZero
295/25/21
375/20/21

stephendevlin

Wouldnt like to be buying tyres for that yoke!

Homer

stephendevlin wrote: »

Wouldnt like to be buying tyres for that yoke!

If you'd the money to buy that you surely wouldn't be worrying about the cost of tyres

Guy:Incognito

stephendevlin wrote: »

Wouldnt like to be buying tyres for that yoke!

Looks like they use a tin of liquid rubber and just paint the rim.:)

Top Dog

Wouldn't be a fan of the wheels, but judging by the photos it looks like it might be a necessity for them to be that big to cover the front brakes? Brakes look fooooking HUGE!

Tragedy

Someone finally found a way to make a GTR look cack.

Number Nine

Vicxas

Arent them wheels specially designed so that the rubber doesnt come off the alloys?

no1beemerfan

LIGHTNING wrote: »

I really dont like the GTR at all. Those wheels are far too big that car.

I disagree with you 100%

Alanstrainor

The car looks well. But i hate the wheels, I hate jumbo wheels, they just look dumb.

squod

I'd imagine it would effect all the jiggery-pokery in the electronics. As people have said it looks kak.

Mr Benevolent

It'd ruin the transmission with the extra torque loads and destroy the performance.

SEPT 23 1989

Did they fit the car to the wheels?

Confab

Confab wrote: »

It'd ruin the transmission with the extra torque loads and destroy the performance.

Even if they are made of super duper light stuff?

Tragedy

RoverJames wrote: »

Even if they are made of super duper light stuff?

The performance loss isn't due to the weight of the wheels, it's due to their radius and the resultant increase in torque needed to make the wheel rotate(distance x force = torque)

Number Nine

Tragedy

Tragedy wrote: »

The performance loss isn't due to the weight of the wheels, it's due to their radius and the resultant increase in torque needed to make the wheel rotate(distance x force = torque)

So the thinking is the diameter of those wheels shod on those tyres is greater than what it should be?
My query was aimed more at the damaging the transmission claim.

Tragedy

RoverJames wrote: »

So the thinking is the diameter of those wheels shod on those tyres is greater than what it should be?
My query was aimed more at the damaging the transmission claim.

The radius is aye. The reason it can damage the transmission is because more torque is needed to turn the wheels putting more strain on the gearbox. Mightn't be a problem on a Bora or Rover 75 or whatever, but on a sportscar I imagine it might be if driven hard.

The front tyres on this have a 4.5% smaller rolling radius, the rear tyres 3.5% smaller

Well a google revealed GTRs come from the factory with 255 40 20s on the front and 285 35 20s on the back. I reckon tyres with suitable profiles could be found to accommodate 21s without too much increase in overall diameter

For example 285 30 21s on the back would be hunky dorey, don't know if such a tyre exists though :pac:

~Only saw now in the OP's post the tyre size.

Nissan doctor

The GTR runs 20 inch wheels as standard so 21's would be of minimal difference. The GTR's factory transmission can handle up to 650hp before it displays weaknesses so an extra inch on the wheels will have no effect.
Also premium wheels like the Advans are likely to be lighter and stronger then the factory wheels so the reduction in unsprung weight would improve handling and the myth that you can't change the wheels on a GTR is just that.

Tragedy

Nissan doctor wrote: »

The GTR runs 20 inch wheels as standard so 21's would be of minimal difference. The GTR's factory transmission can handle up to 650hp before it displays weaknesses so an extra inch on the wheels will have no effect
Also premium wheels like the Advans are likely to be lighter and stronger then the factory wheels so the reduction in unsprung weight would improve handling and the myth that you can't change the wheels on a GTR is just that.

I thought you worked with tyres? You should know better than to judge two tyres on what inch diameter the alloys are rather than on rolling radius. It's like judging cars performance on engine size rather than bhp
Had no idea the gtr gearbox was so strong, explains how they seem to do so well on dragtimes.info

Graham_B18C

Love that white GTR but the silver one looks completely lost without the spoiler

Nissan doctor

Tragedy wrote: »

I thought you worked with tyres? You should know better than to judge two tyres on what inch diameter the alloys are rather than on rolling radius. It's like judging cars performance on engine size rather than bhp
Had no idea the gtr gearbox was so strong, explains how they seem to do so well on dragtimes.info

I didn't judge two tyres at all. I said an extra inch in wheels size wouldn't make a difference. Its a bit pedantic to go into every tiny detail when posting in a public forum, so I didn't. If larger wheels are fitted, its a given that the correct profile tyres to suit the increased wheel diameter would be fitted, we aren't talking about a set of Halfords alloys on a punto here.



The GTR box is, mechanically bullet proof. The only things that need upgrading to make the box capable of upwards of 850hp is two stronger circlips and two stronger clutch plate seals.

cnocbui

LIGHTNING wrote: »

guys in the US

Says it all, really. The question contains the answer.

ARGINITE

LIGHTNING wrote:

I'm far from an expert but why were there loads of guys in the US with gearbox failures if its bullet proof? I remember a couple of guys trying to sue Nissan because they wouldn't repair them under warranty

Answer:

Sitec wrote: »

There not unbreakable though, the launch control puts a lot of strain on the gearbox and they go boom. Also if you use the launch control the warranty is void for the gearbox!

Nissan doctor

As far as I'm aware they based their case on the fact that the car has a launch control function, but yet componants of the gearbox can't cope with multiple launches.

Nissans arguement was that the launch function was not designed for the end user to access. The user manual doesn't give instructions on how to access it and it was designed as a diagnostic/test function!:rolleyes:

The problem for people who claimed they hadn't launched the car was that the ecu records all data including number of times the launch function was accessed. The only way to remove this info was to flash/remap the ecu...in which case the warrenty would be void anyway.:o

DUB777

I still prefer the R34:)

Midnight_EG

Number Nine wrote: »

Fook me that looks slick!