will using 17" wheels damage the gearbox
- Thread starter JIMMYBACK
- Start date
C
Cashpoint
Guest
yes and no larger wheels will put more strain on the gear box so a box on the way out will fail quicker in the same way as increasing the boost on a turbo will decrease it's life. My old R's box fail 8 month after going from std 14 to 17" Kahns' but my R had 145000 miles on the clock when the 17 went on and had been running 1bar for at least 3 years.
GINGA said:Another old wifes tale i'm afraid :roll: loads of people run 17's and even 18's without any problemsjust put what wheels you want on it and stop worrying about the gearbox it ain't anywhere near as bad as its made out to be.
Well said mate :!: About time someone cut through sumo the bull :!:
J
jasegould
Guest
Get a big stik and twat whoever said that :roll:
True there may be an incy wincy poncy little bit more stress on the box but nothing as much as raising the boost to one bar etc
A
Anonymous
Guest
It was the majority of people on this site 6 months ago
if you search for it.I agree running 17's shoudlnt cause any real problems
personally i run 15' compomotives
to match the rally look.[/quote]
J
jasegould
Guest
Ok, get a lot of sticks then
Mr GTiR
New Member
i was the same thing when i got my R.
2 1/2 year later the box and wheel bearings are fine (touch wood). Like someone said you don't know how the car has benn treated while in Japan, etc.
Just stick the 17" on. If it was going to break it would have done it by now.
My car was running 300bhp and i don't take it easy in mine
2 1/2 year later the box and wheel bearings are fine (touch wood). Like someone said you don't know how the car has benn treated while in Japan, etc.
Just stick the 17" on. If it was going to break it would have done it by now.
My car was running 300bhp and i don't take it easy in mine
The biggest problem you'll get with bigger wheels is if they're the wrong offset or alot bigger overall daimmetre with tyres than normal.
Those could cause rubbing problems, extra leverage on the wheel bearings which will reduce their life and the speedo will be out abit.
Unless you have massive grip over standard and launch it every time, your gearbox shouldn't have a problem. (At least no more problems that normal )
Those could cause rubbing problems, extra leverage on the wheel bearings which will reduce their life and the speedo will be out abit.
Unless you have massive grip over standard and launch it every time, your gearbox shouldn't have a problem. (At least no more problems that normal
)
A
antilag
Guest
its not really size that matters more the weight factor but ginga has standard box ap clutch and the heavyest 17's out there and he has no problems
J
J-GTi-R
Guest
Bad driving will break the box much quicker than any set of 17s.
A while back people were saying the stress of 17s will bugger the box, but they also said the standard pistons or turbo couldn't take more than 1 bar (Memski has nicely completely disproven that).
The key thing with the 'R is that if you abuse it, you will break it. Build it right and treat it right, and it'll take lots more than some people will have you think.
A while back people were saying the stress of 17s will bugger the box, but they also said the standard pistons or turbo couldn't take more than 1 bar (Memski has nicely completely disproven that).
The key thing with the 'R is that if you abuse it, you will break it. Build it right and treat it right, and it'll take lots more than some people will have you think.
J
jasegould
Guest
It all to do with leverage The larger the wheel the more leverage acting against the box...I think
The larger the wheel the more leverage acting against the box...I thinkI'd say any clutch would give up in gear far quicker than the box.
If you think about it, say you're running 17's and a lightly modded R 1 bar boost etc...
you're in gear WOT coming on peak boost, surely this is where the 'strain' would take place?. If so, do you seriously think the gearbox is just gonna self destruct because you're running 17's?, I'd say the clutch is more likely gonna slip waaaaay before you're in gear and manage to blow a box apart.
What physically are we talking about braking?, I presume stripping of the teeth?, if so I still reckon you've got more chance of a clutch letting go first.
In my opinion you gotta have serious power to strip gears.
I wouldn't be suprised if it started with someone with a tired box (few graunchy racing down changes in it's life) which had worn down teeth, then they stuck 17's on it and finished it off. Thats my guess.
If you think about it, say you're running 17's and a lightly modded R 1 bar boost etc...
you're in gear WOT coming on peak boost, surely this is where the 'strain' would take place?. If so, do you seriously think the gearbox is just gonna self destruct because you're running 17's?, I'd say the clutch is more likely gonna slip waaaaay before you're in gear and manage to blow a box apart.
What physically are we talking about braking?, I presume stripping of the teeth?, if so I still reckon you've got more chance of a clutch letting go first.
In my opinion you gotta have serious power to strip gears.
I wouldn't be suprised if it started with someone with a tired box (few graunchy racing down changes in it's life) which had worn down teeth, then they stuck 17's on it and finished it off. Thats my guess.