Porsche Brakes - Will they fit under GT1's?
15 November 2012, 04:11 PM
#33
If the wheel is wider you will need a lower offset, not higher.
Check this: http://www.1010tires.com/WheelOffsetCalculator.asp
Your standard wheels have 53 offset so it will be highly improbable to be able to fit Porsche brakes with 60 offset.
Check this: http://www.1010tires.com/WheelOffsetCalculator.asp
Your standard wheels have 53 offset so it will be highly improbable to be able to fit Porsche brakes with 60 offset.
Last edited by fpan; 15 November 2012 at 04:12 PM.
15 November 2012, 04:22 PM
#34
No, it's the other way around. Try it with the calculator you sent me: the 8.5 inch rim "sticks out 8mm further" than the 7.5 inch rim. If the outside of the rim sticks 8mm further out, that's an extra 8mm of clearance from the caliper.
If a 7.5 inch rim clears the caliper with a 48 offset, an 8.5 inch rim will clear the caliper with a 60 offset.
If a 7.5 inch rim clears the caliper with a 48 offset, an 8.5 inch rim will clear the caliper with a 60 offset.
Last edited by MadUsa1; 15 November 2012 at 04:33 PM.
15 November 2012, 04:29 PM
#35
No, it's the other way around. Try it with the calculator you sent me: the 8.5 inch rim "sticks out 8mm further" with the 8.5 inch rim. If the outside of the rim sticks 8mm further out, that's an extra 8mm of clearance from the caliper.
If a 7.5 inch rim clears the caliper with a 48 offset, an 8.5 inch rim will clear the caliper with a 60 offset.
If a 7.5 inch rim clears the caliper with a 48 offset, an 8.5 inch rim will clear the caliper with a 60 offset.
How about this: the gap between the spokes and the caliper is NOT changing. The wheel rim is either moving inward and hitting the strut (et number to big), or outward and sticking out past the arches (et number too small).
Last edited by 2pot; 15 November 2012 at 04:54 PM.
15 November 2012, 04:38 PM
#37
How on earth are you going to have more caliper clearance if the wheel is retracted from the outside by 1mm?!
Original wheels: 8 inches ET53
The wheels you claim will fit: 8.5 inches ET60
Inner clearance: 13mm less
Outer clearance: Retract by 1mm
Besides you will most probably hit the struts having 13mm less clearance.
Original wheels: 8 inches ET53
The wheels you claim will fit: 8.5 inches ET60
Inner clearance: 13mm less
Outer clearance: Retract by 1mm
Besides you will most probably hit the struts having 13mm less clearance.
Last edited by fpan; 15 November 2012 at 04:42 PM.
15 November 2012, 06:46 PM
#38
No, that's not the point. Someone else on this thread has used 7.5" ET rims with the Porsche brakes. All I said is that that is equivalent to about ET60 on an 8.5 inch rim.
15 November 2012, 10:47 PM
#41
Sorry, I realize I'm being a bit slow here, just trying to get my head around this.
But my point is this: a 7.5" ET48 rim gives the same brake caliper clearance as an 8.5" ET 60 rim.
So, depending on the design of the rim, if a 7.5" ET48 rim fits over the Porsche caliper, an 8.5" ET53 rim should fit easily.
But my point is this: a 7.5" ET48 rim gives the same brake caliper clearance as an 8.5" ET 60 rim.
So, depending on the design of the rim, if a 7.5" ET48 rim fits over the Porsche caliper, an 8.5" ET53 rim should fit easily.
15 November 2012, 11:09 PM
#42
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Try it and if you scratch the heck out of the calipers then you'll realize what everyone is trying to tell you is correct.
If they fit and don't damage the calipers, everyone else is wrong.
Simple
If they fit and don't damage the calipers, everyone else is wrong.
Simple
15 November 2012, 11:14 PM
#43
Sorry, I realize I'm being a bit slow here, just trying to get my head around this.
But my point is this: a 7.5" ET48 rim gives the same brake caliper clearance as an 8.5" ET 60 rim.
So, depending on the design of the rim, if a 7.5" ET48 rim fits over the Porsche caliper, an 8.5" ET53 rim should fit easily.
But my point is this: a 7.5" ET48 rim gives the same brake caliper clearance as an 8.5" ET 60 rim.
So, depending on the design of the rim, if a 7.5" ET48 rim fits over the Porsche caliper, an 8.5" ET53 rim should fit easily.
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