Currently I have in the front 20x9 255/35/20 rear 20x10 305/35/20.
Ur fronts only have a 89.25 mm sidewall ( 3.51" ) There's a big chunk of your problem right there.
The rears are fine.
Currently I have in the front 20x9 255/35/20 rear 20x10 305/35/20.
Changing that front tire to a 265/35/20 or 275/35/20 will help a lot with comport while improving handlingCurrently I have in the front 20x9 255/35/20 rear 20x10 305/35/20.
Actually, it's the Eibach pro springs which are 1.3" front and 1.5" rear. Eibach sportline springs are 1.6" front and 2.0" rear. IMO, part of the reason your "05" GT rode like a buckboard with the Eibach pro springs, was from pairing them with the original dampers which aren't designed for lowering springs, to begin with. My "06" GT has the Eibach pro springs paired with Koni Yellow adjustable struts/shocks on full soft settings. Needless to say, my car doesn't ride like a buckboard from your description lol.My 05 GT had Eibach sport springs (1.3 fr, 1.5 rear) and original dampers, 28k miles and road like a buckboard.
I couldn't stand it.
I bought Steeda sport linear springs,
1 inch front 1.25 rear and Bilstein shocks/ struts.
Night and day difference.
Still a nice firm ride, no diving, minimal body roll, but the little expansion joint jolts are gone.
Something to do with the valving I believe.
I ordered mine in like February a year or two ago, some kind of back order, took like 6 months to come in!
Still worth it.
Every mustang I buy will have Bilstein installed from now on.
Best mod I've done.
Actually, it's the Eibach pro springs which are 1.3" front and 1.5" rear. Eibach sportline springs are 1.6" front and 2.0" rear. IMO, part of the reason your "05" GT rode like a buckboard with the Eibach pro springs, was from pairing them with the original dampers which aren't designed for lowering springs, to begin with. My "06" GT has the Eibach pro springs paired with Koni Yellow adjustable struts/shocks on full soft settings. Needless to say, my car doesn't ride like a buckboard from your description lol.
Yes! that's exactly spot on with Eibach Sportline Springs. However, the OP posted his Eibach sportlines lower the front by 1.3" and the rear by 1.5" Perhaps it was just a typo on the OP's part and intended to refer to the Eibach Pro Springs as lowering the front by 1.3"and the rear by 1.5" rather than the sportlines which do in fact lower the front by 1.6" and the rear by 2.0"With a 1.6" front..and a 2.0" rear drop... and oem dampers, u just lost 1.6" of travel on front struts....
and 2.0" of travel on rear shocks.
Yes. Eibach Pro springs.
My bad......still awful ride with the original dampers.
But I bought it used that way, so what are ya gonna do?
My point was......changing the springs and dampers solved the problem.
The Eibachs were too low for my taste, anyway.
1 front and 1.25 rear is perfect for me with 245/45r19 and 285/40r19 tires.
And the Bilsteins are perfect for me as well.
Your mileage may vary.....
Agreed.I tell everyone to go with Bilsteins. There expensive but well worth it.
This is at least partly due to the way Ford picks rear spring rates being different from the way most aftermarket spring rates are chosen. Ford tends to go with higher rear spring rates than front spring rates, while the aftermarket generally goes the other way. So - and this is relatively speaking - Ford's setup doesn't need as much rear bar to end up with the desired handling balance. The aftermarket, with spring rates biased toward the front, needs to use more rear bar to hit the same understeer budget target.Many of the track mustangs use the stock uca or the multimatic version. Rear sway bars are often smaller diameter than stock instead of the larger diameter aftermarket ones.
As posted previously, your ride was awful due to running the stock dampers with the Eibach pro springs which are designed for the stock springs. My guess is, if you had paired the Eibach pro springs with your Bilstein dampers? you more than likely would've noticed a huge difference. Also, there's very little difference between 1-1.3" drop (front) and 1.25-1.5" drop (rear) Therefore, I don't quite follow your logic about the Eibach pro springs as being too low for your tastes? At any rate, did you change the springs and dampers at the same time, or did you change either the springs or dampers first?Yes. Eibach Pro springs.
My bad......still awful ride with the original dampers.
But I bought it used that way, so what are ya gonna do?
My point was......changing the springs and dampers solved the problem.
The Eibachs were too low for my taste, anyway.
1 front and 1.25 rear is perfect for me with 245/45r19 and 285/40r19 tires.
And the Bilsteins are perfect for me as well.
Your mileage may vary.....
Agreed.
Unless the 2019's have dramatically improved the ride, I'll add them again!
As posted previously, your ride was awful due to running the stock dampers with the Eibach pro springs which are designed for the stock springs. My guess is, if you had paired the Eibach pro springs with your Bilstein dampers? you more than likely would've noticed a huge difference. Also, there's very little difference between 1-1.3" drop (front) and 1.25-1.5" drop (rear) Therefore, I don't quite follow your logic about the Eibach pro springs as being too low for your tastes? At any rate, did you change the springs and dampers at the same time, or did you change either the springs or dampers first?
My 19 PP1/A10 although completely different chassis, is 10 times better than my 14 TrakPak ever was. I did a 1300+ mile road trip a month ago, going through Oregon, California and into Arizona and it was a very enjoyable two day drive. As for lowering the 19, no need to as I filled the fender wells with 265/40/19 in front and 285/40/19 Michelin Pilot's. The best tire for ride comfort and very little noise.
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Springs and dampers at the same time.
And I beg to differ on .3 inches making little difference.
.3 at the hub isn't much but transferred out to my chin spoiler it's significant.
I had added 245/45r19 tires on 19x8.5 front wheels with the original Eibachs at 1.3 drop, and from the side, the gap from the top of the tire to the fender was much smaller than the gaps from front of the tire to the front fender and the rear to the rear.
Looked stupid to me, now the gap is uniform all the way around the fender well.
And I had clearance issues under the car at convenience stores, if i wasn't cautious I'd scrape my exhaust on the little covers on the ground where they fill the underground tanks.
The concrete parking blocks and curbs I had to be careful of my front end.
Not worth the headache to me, plus as I've already said, I didn't like the look.
So if you don't think .3 inches isn't enough to make a difference, that's your opinion.
My opinion is, when talking about ride height, it is significant to me.