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mickey thompson poor wet performance 255/60/r15
#31
donkost
And you're not exactly comparing apples to apples there. Modern asymmetric soft compounds on modern suspensions, compared to a '71 Mustang which is really a '63 Falcon underneath. My '71 Mach 1 won't handle like my '85 Ferrari Mondial (308 chassis in 2+2 format) regardless of which tires are used. lol


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You're absolutely right 

I'm on 15" rims with ...60mm walls on 48 year old barn door bouncy style engineering made out of cart springs.

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#32
(05-06-2019, 08:29 AM)1sostatic Wrote: donkost
And you're not exactly comparing apples to apples there.  Modern asymmetric soft compounds on modern suspensions, compared to a '71 Mustang which is really a '63 Falcon underneath.  My '71 Mach 1 won't handle like my '85 Ferrari Mondial (308 chassis in 2+2 format) regardless of which tires are used.  lol


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You're absolutely right 

I'm on 15" rims with ...60mm walls on 48 year old barn door bouncy style engineering made out of cart springs.

If you want to spend more money, may I suggest upgrading the suspension a bit. You don't really need to go all out, but I found that adding larger anti-sway bars, better KYB  Gas-A-Just shocks and 4 1/2 leaf rear springs helped big time.  1/1/8" front and 7/8" rear anti-sway bars. Car goes round corners like it's on rails with little body roll..... remembering of course, it's not your Merc or Jag! 
Geoff.

I learn something new every day!
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#33
That brings to mind two things, one is that I've heard the Mustangs do a little better with the Gas-A-Just up front and a lighter GR2 (Excel G) out back. Too stiff and the rear end bounces on rough roads, starting bouncing and you lose contact with the road.
Think about all those little French things that lean onto their door handles, but all four tires are still in contact with the road (that line probably won't make much sense to many, but I think 1sostatic will probably know what I'm talking about). Rough, uneven roads have a different need than a smooth one.

I use to run Kumho Ecsta ASX's on my RX7. They were fantastic. Could not beat them for the price plus 50%. Put them on the 2001 Focus, so much better and cheaper than the original tires. Then they changed. Still make good passenger car all season tires. But the light truck and performance all season just don't rate as high anymore.
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#34
Drop a 200lb lead block in the trunk and handling will improve. Off course you may need better springs to go with it... lol

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1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
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#35
(05-06-2019, 05:07 PM)tony-muscle Wrote: Drop a 200lb lead block in the trunk and handling will improve. Off course you may need better springs to go with it... lol

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That was my winter procedure with my 73 Grandé and the 70 fastback....a concrete block with more concrete in the holes and a full toolbox. Worked okay, but the Goodyear Eagle GT+4 tires were amazing. I was very sorry when they quit making those.
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#36
Same trick here, to help with winter driving in the northeast US back in the early 80's. Used to put one or two bags of Sacrete concrete mix in the trunk of my '68 GTO, right above the rear axle. That car had gas shocks and new coil springs at all four corners, and I had installed a rear sway bar from a '70 GTO since the '68 did not have one. Bought it new in the GM box at the neighborhood Pontiac dealer parts counter. It handled acceptably for what it was, a nose-heavy beast with a live rear axle. I wouldn't say my '71 Mach 1 429 is better or worse at handling, but without installing new suspension upgrade kits these cars they are more akin to the handling of a Conestoga wagon. lol But they do go great in a straight line!
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