255 in front with 19" possible?
Remove fender liner - easy, just a handful of torx screws
He moved the radiator bracket forward about 1", then reassembled
Drilled an extra hole in fender liner at about the height of the axle to insert another screw to hold liner in place
Also added a couple of pop rivets on the GT3 brake cooling ducts to keep them out of the way.
Tweaked the thrust arm bushing to move the wheel back as much as possible.
But, I am running 18" rims, not 19", so even this might not be enough for you to run this tire/wheel combo.
There just isn't a lot of room up front in these cars.
Hope you find a solution.
Jon
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Sounds interesting and also sounds like what sambo had done at speed gallery.
All we need is 1" or less and you go with much taller tires and wider rims or less offset (all of which stick out more or increase the radius when you turn the wheel).
@pumalex I have contact on the same point but there is surprisingly little wear on the fender liners. I wonder if the clearance is different when there is weight and force as you're driving.
Either way that 1" would get rid of every issue and let us sleep better.
I'm running a 9.5" front wheel with pretty thick 265/35-18
I will say more front camber, a stiffer rear bar AND wider rims and tires have added a LOT of front end grip and has dialed all of the understeer.
All we need is 1" or less and you go with much taller tires and wider rims or less offset (all of which stick out more or increase the radius when you turn the wheel).
@pumalex I have contact on the same point but there is surprisingly little wear on the fender liners. I wonder if the clearance is different when there is weight and force as you're driving.
Either way that 1" would get rid of every issue and let us sleep better.
I'm running a 9.5" front wheel with pretty thick 265/35-18
I will say more front camber, a stiffer rear bar AND wider rims and tires have added a LOT of front end grip and has dialed all of the understeer.
Well, first I should admit that I used the wrong pronoun - my indie did it. But here's what he did:
Remove fender liner - easy, just a handful of torx screws
He moved the radiator bracket forward about 1", then reassembled
Drilled an extra hole in fender liner at about the height of the axle to insert another screw to hold liner in place
Also added a couple of pop rivets on the GT3 brake cooling ducts to keep them out of the way.
Tweaked the thrust arm bushing to move the wheel back as much as possible.
But, I am running 18" rims, not 19", so even this might not be enough for you to run this tire/wheel combo.
There just isn't a lot of room up front in these cars.
Hope you find a solution.
Jon
Remove fender liner - easy, just a handful of torx screws
He moved the radiator bracket forward about 1", then reassembled
Drilled an extra hole in fender liner at about the height of the axle to insert another screw to hold liner in place
Also added a couple of pop rivets on the GT3 brake cooling ducts to keep them out of the way.
Tweaked the thrust arm bushing to move the wheel back as much as possible.
But, I am running 18" rims, not 19", so even this might not be enough for you to run this tire/wheel combo.
There just isn't a lot of room up front in these cars.
Hope you find a solution.
Jon
Last edited by Turbo Fanatic; Aug 13, 2011 at 08:52 PM.
I'm running stock sizes. I've dialed out the understeer with sway bars and GT3 split control arms for more negative camber.
For the track, I insert 14mm shims up front to get -2.2 or so, and run -0.9 for the street. Rears are -1.9 for street, -2.5 for track. I get that using adjustable dogbones instead of split arms. Not that one is better than the other, just how I did it.
Jon
For the track, I insert 14mm shims up front to get -2.2 or so, and run -0.9 for the street. Rears are -1.9 for street, -2.5 for track. I get that using adjustable dogbones instead of split arms. Not that one is better than the other, just how I did it.
Jon
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well i just talked on the phone with SamboTT and he said it is very doable to move the radiator forward so i am going to give it a shot tomorrow and try to take some pictures in the process. Also, one thing he pointed out which i didn't think of is that (i beleive) my wheels are only 8,5" wide in front so the 255 are not really stretched, in fact, they are even a little "bubbled" so they are even taller than if i was using a 9 or 9,5 inch wheel.
Without the fender liner i beleive that if i can move the bracket 1/2 inch forward i might be ok but i will try to take as much as possible so that i can fit a reshaped front fender liner.
I really need to get this figured out quick because i need to be gone tuesday morning for the track, pressure pressure pressure!
Without the fender liner i beleive that if i can move the bracket 1/2 inch forward i might be ok but i will try to take as much as possible so that i can fit a reshaped front fender liner.
I really need to get this figured out quick because i need to be gone tuesday morning for the track, pressure pressure pressure!
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Ok here is the situation, i currently have T1-R in 235/35 and 315/25, the recommended size. They are OK tires but i would like something with a little more grip and especially something a little wider in front because my car understeer pretty bad at the track in long corners. I don't want too agressive of an alignement as i like to keep my tires for long and have them wear evenly.
Now i found that everyone seems to like the Bridgestone RE11 and it seems to be the best compromise between street and track (don't want 2 sets of wheels and don't want to drive on R compound yet, not ready).
the problem is the choice in size, with the 315/25 in the rear, all you can have is T1-R, Invo or the expensive Pilot. If i want to go with RE11, i would need to use a 305/30/19 as they don't make a 295/30.
Per tirerack, the 305/30 is 26,3" high or 792 rev/mile. To get a good matching front tire, i would need to get a 255/35 which is 26" and 801 rev (pretty close). My other option is 245/35 which is 25.8 and 807 rev (maybe this is too much of a difference?).
So, anyone is running 255/35/19 in front without rubbing? I am on PSS10 and the suspension isn't all that low, i would guess GT2 or GT3 height probably. They are about 0,5" taller than my current 235/35 T1-R but also 20mm wider..., 245 would make more sense but i am afraid with all that chewed differential talk.
i did a lot of research on the forum but not many people seem to be running this, i beleive i have found only one.
thanks a lot for any help or experience. It would suck to buy tires and not be able to run them because they rob on the suspension or the fender.
Now i found that everyone seems to like the Bridgestone RE11 and it seems to be the best compromise between street and track (don't want 2 sets of wheels and don't want to drive on R compound yet, not ready).
the problem is the choice in size, with the 315/25 in the rear, all you can have is T1-R, Invo or the expensive Pilot. If i want to go with RE11, i would need to use a 305/30/19 as they don't make a 295/30.
Per tirerack, the 305/30 is 26,3" high or 792 rev/mile. To get a good matching front tire, i would need to get a 255/35 which is 26" and 801 rev (pretty close). My other option is 245/35 which is 25.8 and 807 rev (maybe this is too much of a difference?).
So, anyone is running 255/35/19 in front without rubbing? I am on PSS10 and the suspension isn't all that low, i would guess GT2 or GT3 height probably. They are about 0,5" taller than my current 235/35 T1-R but also 20mm wider..., 245 would make more sense but i am afraid with all that chewed differential talk.
i did a lot of research on the forum but not many people seem to be running this, i beleive i have found only one.
thanks a lot for any help or experience. It would suck to buy tires and not be able to run them because they rob on the suspension or the fender.
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What nobody is asking here is what offset on the front is required to avoid rubbing with a 255. Offset is the key. Ari, what offset is the 18x9.5 (with the 265/35/18) that you are using without rubbing problems?
Sounds interesting and also sounds like what sambo had done at speed gallery.
All we need is 1" or less and you go with much taller tires and wider rims or less offset (all of which stick out more or increase the radius when you turn the wheel).
@pumalex I have contact on the same point but there is surprisingly little wear on the fender liners. I wonder if the clearance is different when there is weight and force as you're driving.
Either way that 1" would get rid of every issue and let us sleep better.
I'm running a 9.5" front wheel with pretty thick 265/35-18
I will say more front camber, a stiffer rear bar AND wider rims and tires have added a LOT of front end grip and has dialed all of the understeer.
All we need is 1" or less and you go with much taller tires and wider rims or less offset (all of which stick out more or increase the radius when you turn the wheel).
@pumalex I have contact on the same point but there is surprisingly little wear on the fender liners. I wonder if the clearance is different when there is weight and force as you're driving.
Either way that 1" would get rid of every issue and let us sleep better.
I'm running a 9.5" front wheel with pretty thick 265/35-18
I will say more front camber, a stiffer rear bar AND wider rims and tires have added a LOT of front end grip and has dialed all of the understeer.
Jon
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Posts: 4,848
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As you said, it makes little difference but when the difference between rubbing on the fender liner maybe as little as few millimeters at full steering deflection than it matters. So the question still stands, for those that have no rubbing with a 255 or 265 on the front, what kind of offset are you running and on what size wheel? Or is offset information top secret for some reason?
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i have been able to make them fit with a little modification to the rad support, i am going to the track so i won't be posting for a week but i took some pictures, i will post them and explain everything i did in case someone needs to do the same thing.
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Sorry it took me so long to chime in again on this one. I used a heat gun and just pushed in the part of the inner fender that rubbed. I doubt I moved it more than 1/2", but it worked for me.
I don't know the offset details of my wheels. That may have something to do with it..
g
I don't know the offset details of my wheels. That may have something to do with it..
g
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From: In a Canyon - Really :)
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I believe it's a 46 offset. Wider wheels and tires and less offset (pushes the wheel further out). The further you push our the wheels, the less clearance since the wider track results in a larger radius for the wheel.
I can tell you for fact that stock front wheels and tires will not touch with a 15mm spacer (although they do some close).
The 235 /40-19? the standard 19" setup is a bit taller and tends to rub. You're mixing a taller tire with more track. it will touch just barely.
I can tell you for fact that stock front wheels and tires will not touch with a 15mm spacer (although they do some close).
The 235 /40-19? the standard 19" setup is a bit taller and tends to rub. You're mixing a taller tire with more track. it will touch just barely.
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i will look into modifying the fender liner, i am just wondering what there is behind that "bump"
ari, you said in the PM that you rub a little when doing thight turn, i rub when i turn the steering wheel even half a turn, the bump in the liner seems to be the problem.
I'll do some more testing i guess.
ari, you said in the PM that you rub a little when doing thight turn, i rub when i turn the steering wheel even half a turn, the bump in the liner seems to be the problem.
I'll do some more testing i guess.
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