Staggered Fit Wheels; The Results
20 March 2012, 11:27 PM
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Staggered Fit Wheels; The Results
Re. this thread: https://www.scoobynet.com/wheels-tyr...it-wheels.html
2 years/~18k miles later, and the result is...
... new gearbox, new clutch, new flywheel :|
(technically it was just the box, but we fitted a WRX box into a Sport which meant new clutch and flywheel too)
Basically, rear drop gear bearing completely asploded (the gear literally just floats around in the socket), and the debris took out every other bearing in the 'box and scoured all the inside.
Now, we don't know *for sure* if the staggered fitment was the cause, since the difference was so slight, but perhaps it was, and maybe that's why it's taken 2 years to happen.
You live and learn.
Massive thanks to Mark at http://tdracing.co.uk though, pulled out all the stops to get it done, can't thank or recommend him enough
2 years/~18k miles later, and the result is...
... new gearbox, new clutch, new flywheel :|
(technically it was just the box, but we fitted a WRX box into a Sport which meant new clutch and flywheel too)
Basically, rear drop gear bearing completely asploded (the gear literally just floats around in the socket), and the debris took out every other bearing in the 'box and scoured all the inside.
Now, we don't know *for sure* if the staggered fitment was the cause, since the difference was so slight, but perhaps it was, and maybe that's why it's taken 2 years to happen.
You live and learn.
Massive thanks to Mark at http://tdracing.co.uk though, pulled out all the stops to get it done, can't thank or recommend him enough
22 March 2012, 12:11 AM
#5
There was another thread a long time ago when someone asked the same same. And I said...nope (probably in more words). Not many true full time AWD cars run staggered wheel/tyre combos, and the Impreza is one of them.
Its all about DYNAMIC rolling radius....this is different to static rolling radius as it varies upon payload, pressures and corning/braking/accelaration forces. Even if the static radii are the same, the different size tyres will behave and deform differently when driving causing different rotational speeds.
edit....found it: https://www.scoobynet.com/non-scooby...rive-cars.html
Looks like you found out the expensive way
Its all about DYNAMIC rolling radius....this is different to static rolling radius as it varies upon payload, pressures and corning/braking/accelaration forces. Even if the static radii are the same, the different size tyres will behave and deform differently when driving causing different rotational speeds.
edit....found it: https://www.scoobynet.com/non-scooby...rive-cars.html
Looks like you found out the expensive way
Last edited by ALi-B; 22 March 2012 at 12:12 AM.
22 March 2012, 12:33 AM
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There was another thread a long time ago when someone asked the same same. And I said...nope (probably in more words). Not many true full time AWD cars run staggered wheel/tyre combos, and the Impreza is one of them.
Its all about DYNAMIC rolling radius....this is different to static rolling radius as it varies upon payload, pressures and corning/braking/accelaration forces. Even if the static radii are the same, the different size tyres will behave and deform differently when driving causing different rotational speeds.
edit....found it: https://www.scoobynet.com/non-scooby...rive-cars.html
Looks like you found out the expensive way
Its all about DYNAMIC rolling radius....this is different to static rolling radius as it varies upon payload, pressures and corning/braking/accelaration forces. Even if the static radii are the same, the different size tyres will behave and deform differently when driving causing different rotational speeds.
edit....found it: https://www.scoobynet.com/non-scooby...rive-cars.html
Looks like you found out the expensive way
22 March 2012, 02:16 PM
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Don't knock yourself out, cars that are used on trackdays/dragways can inflict a similar level of distress on the transmission...
dunx
dunx
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