offset fitment
04-20-2018, 05:08 PM
#1
Intermediate
Thread Starter
offset fitment
I purchased a set of wheels for my turbo S. Will these fit without spacers? Thanks in advance for your input. 17 x 7.5 ET 52 front
17 x 9.0 ET 47 back
17 x 9.0 ET 47 back
04-20-2018, 07:34 PM
#3
Nordschleife Master
04-20-2018, 08:08 PM
#4
Intermediate
Thread Starter
I did some searching and I found this.
"Something that is very important in relation to the front wheel offsets is ( IF ) the said 968 , 951 or even a 944S2 came with the Bigger front Brembo brakes ( 944 Turbo S brakes ) as an expensive " Factory " option , then in this case Porsche used the very expensive very different front stub axles ( spindles in USA speak ) and these front spindles / stub axles meant that a 65 ET ( off set ) front road wheel HAD to be used , any lower offset , say like the Mille Miglia 52 mm ET would push the rim 13 mm ( 1/2 " ) outwards more than it should be = lots of tram tracking because the scrub radius is way out"
How much of an impact would that have on handling?
Thanks again for responding.
"Something that is very important in relation to the front wheel offsets is ( IF ) the said 968 , 951 or even a 944S2 came with the Bigger front Brembo brakes ( 944 Turbo S brakes ) as an expensive " Factory " option , then in this case Porsche used the very expensive very different front stub axles ( spindles in USA speak ) and these front spindles / stub axles meant that a 65 ET ( off set ) front road wheel HAD to be used , any lower offset , say like the Mille Miglia 52 mm ET would push the rim 13 mm ( 1/2 " ) outwards more than it should be = lots of tram tracking because the scrub radius is way out"
How much of an impact would that have on handling?
Thanks again for responding.
04-20-2018, 09:11 PM
#5
Nordschleife Master
I did some searching and I found this.
"Something that is very important in relation to the front wheel offsets is ( IF ) the said 968 , 951 or even a 944S2 came with the Bigger front Brembo brakes ( 944 Turbo S brakes ) as an expensive " Factory " option , then in this case Porsche used the very expensive very different front stub axles ( spindles in USA speak ) and these front spindles / stub axles meant that a 65 ET ( off set ) front road wheel HAD to be used , any lower offset , say like the Mille Miglia 52 mm ET would push the rim 13 mm ( 1/2 " ) outwards more than it should be = lots of tram tracking because the scrub radius is way out"
How much of an impact would that have on handling?
Thanks again for responding.
"Something that is very important in relation to the front wheel offsets is ( IF ) the said 968 , 951 or even a 944S2 came with the Bigger front Brembo brakes ( 944 Turbo S brakes ) as an expensive " Factory " option , then in this case Porsche used the very expensive very different front stub axles ( spindles in USA speak ) and these front spindles / stub axles meant that a 65 ET ( off set ) front road wheel HAD to be used , any lower offset , say like the Mille Miglia 52 mm ET would push the rim 13 mm ( 1/2 " ) outwards more than it should be = lots of tram tracking because the scrub radius is way out"
How much of an impact would that have on handling?
Thanks again for responding.
That sounds like someone looking for a problem that doesn’t exist. There are plenty of 944’s with wider wheels pushed out 13 mm (1/2 in) closer to the fenders at the front and, unless I’m missing something, I’ve never heard of any “tram tracking”.
If you think about it the inner rim of the new wheel is in the same place and the outer rim is 13 mm closer to the fender, so you have only changed the wheel track by 1/4 in on each side, imo that’s nothing to worry about.
09-04-2018, 11:14 PM
#6
3rd Gear
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19x8.5 et 46 & 19x9.5 et 56 on my 1987 944 Turbo
Compared to the stock offset 52.3 the front should ne 13 mm (1/2inch) closer to the inner suspension and 25mm (1inch)towards the outer fender.
the rear should be 23mm closer to the inner fender and suspension and 13mm towards the outer! Will these fit my 1988 944 Turbo? Help, im anout to go crazy! L
the rear should be 23mm closer to the inner fender and suspension and 13mm towards the outer! Will these fit my 1988 944 Turbo? Help, im anout to go crazy! L
09-05-2018, 12:25 PM
#7
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Compared to the stock offset 52.3 the front should ne 13 mm (1/2inch) closer to the inner suspension and 25mm (1inch)towards the outer fender.
the rear should be 23mm closer to the inner fender and suspension and 13mm towards the outer! Will these fit my 1988 944 Turbo? Help, im anout to go crazy! L
the rear should be 23mm closer to the inner fender and suspension and 13mm towards the outer! Will these fit my 1988 944 Turbo? Help, im anout to go crazy! L
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09-05-2018, 12:48 PM
#8
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I'm fitting trying to fit a 20x8.5 et46 front and 20x9.5 et56 Replica Turbo 2 wheel! With the right tire the diameter is the same as stock 25 with a 30 series tire or 26.4 diameter with a 35 series. Not really concerned with ride quality of speed odometer being off. Car will be driven occasionally or pulled to shows!
09-05-2018, 09:54 PM
#9
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@Tedro951
Excuse me im new to the forum! Ops? I'm fitting trying to fit a 20x8.5 et46 front and 20x9.5 et56 Replica Turbo 2 wheel! With the right tire the diameter is the same as stock 25 with a 30 series tire or 26.4 diameter with a 35 series. Not really concerned with ride quality or speed odometer being off. Car will be driven occasionally or pulled to shows!
09-05-2018, 10:26 PM
#10
Nordschleife Master
“OP” means Original Poster or the person who started this thread. You’ve confused folk by posting to a thread that is only vaguely related to your problem, you should have started a new thread.
As for your issue, 19in wheels are not a popular fitment for our cars so it’s highly unlikely anyone here will have answers for you. Looks like you have calculated the clearances though, so I suggest you get a ruler out and measure from the stock wheels you have fitted, the extra amount you calculated to see if they will clear.
As for your issue, 19in wheels are not a popular fitment for our cars so it’s highly unlikely anyone here will have answers for you. Looks like you have calculated the clearances though, so I suggest you get a ruler out and measure from the stock wheels you have fitted, the extra amount you calculated to see if they will clear.
Last edited by MAGK944; 09-05-2018 at 10:44 PM.
09-06-2018, 01:34 AM
#11
Instructor
There are tools you can buy to measure and verify wheel fitment. Percy’s seems popular.
https://www.jegs.com/i/Percy's/760/01201/10002/-1?CAWELAID=1710534765&CAGPSPN=pla&CAAGID=44693592161&CATCI=pla-176539549511&CATARGETID=230006180039217141&cadevice=m&gclid=CjwKCAjw_b3c BRByEiwAdG8WqvS6Zs4iGRNCBnRoW35zASgKlMO1VubRDpGc-3jWifXaq1a5cv7wjhoC0RcQAvD_BwE
https://www.jegs.com/i/Percy's/760/01201/10002/-1?CAWELAID=1710534765&CAGPSPN=pla&CAAGID=44693592161&CATCI=pla-176539549511&CATARGETID=230006180039217141&cadevice=m&gclid=CjwKCAjw_b3c BRByEiwAdG8WqvS6Zs4iGRNCBnRoW35zASgKlMO1VubRDpGc-3jWifXaq1a5cv7wjhoC0RcQAvD_BwE