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Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2539114
08/20/18 04:09 PM
08/20/18 04:09 PM
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BigBlockMopar Offline
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Michelin Primacy. Not sure of any number 3 or 4?
Simple street tires.
I don't push my car that hard on street that wider tires are necessary.

Any wider than 225 and the tires start rubbing up front during 3 point turning, or rub after the downward slope of large speedbumps.

I would like to wider tires but would need different offset wheels for that. But then it gets to that flat, 'dishless' look I don't quite like.

My wheels are standard 7J Showwheels, model 'Trashstar'.
Have to look up the backspacing on those online somewhere.

Re: Sorting out suspension...could use some advice (as always!) [Re: BigBlockMopar] #2539509
08/21/18 11:52 AM
08/21/18 11:52 AM
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Connecticut, USA
MRGTX Offline OP
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Michelin Primacy? Well, they're a good quality tire but also a pretty notorious low-grip, no-season tire. smile
I guess the question is where DO you push your car?

The rubbing on the front/bottom corner of the wheel arch when turning is a common problem but folks have found specs that work.

It's a damn headache to be honest.

Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2539636
08/21/18 03:54 PM
08/21/18 03:54 PM
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The A-bodies have it 'bad' when it comes to tire-width upgrades.
My DIY C-body rotor discbrake 'upgrade' made the Dart's trackwidth about 3/8"(?) narrower on the front (compared to the stock '73 discbrakes).
Not so desirable for handling, but in this case 'very welcome' when you want to install wider than stock tires and dealing with wheels that are only available in fixed backspacing/offsets.

The Michelin's (or any other good Brand-name tire) were a welcome upgrade to the BFG's I used to use years ago.
I usually buy my tires 'used' in pairs from the local classifieds, as long as they have enough profile to be run a few years.

I'd love to run wider tires under the car, albeit mainly just for looks, but I also know things can good bad quickly with wet roads and wide tires.

Re: Sorting out suspension...could use some advice (as always!) [Re: BigBlockMopar] #2539918
08/22/18 08:43 AM
08/22/18 08:43 AM
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Connecticut, USA
MRGTX Offline OP
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Originally Posted By BigBlockMopar
The A-bodies have it 'bad' when it comes to tire-width upgrades.
My DIY C-body rotor discbrake 'upgrade' made the Dart's trackwidth about 3/8"(?) narrower on the front (compared to the stock '73 discbrakes).
Not so desirable for handling, but in this case 'very welcome' when you want to install wider than stock tires and dealing with wheels that are only available in fixed backspacing/offsets.

The Michelin's (or any other good Brand-name tire) were a welcome upgrade to the BFG's I used to use years ago.
I usually buy my tires 'used' in pairs from the local classifieds, as long as they have enough profile to be run a few years.

I'd love to run wider tires under the car, albeit mainly just for looks, but I also know things can good bad quickly with wet roads and wide tires.


Once again, thanks for the insights here.

I've heard of Cordoba brake swaps onto A-Bodies...but you went with the C-Body brakes. Are those bigger than Cordoba brakes? Did the C-Body caliper brackets drop right on? Did you lose tie rod adjustment or reduce any other alignment flexibility with the new geometry?

I hear you on the benefits of narrowing the track width (for the sake of tire fitment) so I'm really interested in this.

Last edited by MRGTX; 08/22/18 08:45 AM.
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2540084
08/22/18 04:24 PM
08/22/18 04:24 PM
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BigBlockMopar Offline
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I used the '73 C-body rotors (and calipers) just because I had them on the shelf for other discbrake conversions. And they are fairly cheap.

The C-rotors are 1.25" thick and 11.75" in diameter, the same as the Cordoba-rotors I believe (although not sure about the thickness).
C-body calipers have a large 2.75" piston diameter.

One thing different on the C-rotors is the outer bearing size. It's larger so the spindle needs a sleeve to make it thicker to carry the larger C-body bearing.
I used Cordoba/Charger caliper-brackets, which were spaced on the spindle by 2 simple large washers.

The rotor-change didn't alter anything in the suspension or steering-linkage. It just mounted in place of the stock rotor.
But I would not advice to copy this swap to the dot, as it didn't make things lighter upfront.

Here's some more info about what I did;
https://www.bigblockmopar.nl/2012/06/dart-discbrake-upgrade/

I'm currently looking options of loosing the heavy brake calipers and brackets, and install a lightweight caliper.

Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2540363
08/23/18 11:22 AM
08/23/18 11:22 AM
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Cordoba rotors are 1" thick.


Re: Sorting out suspension...could use some advice (as always!) [Re: TC@HP2] #2540368
08/23/18 11:32 AM
08/23/18 11:32 AM
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Originally Posted By TC@HP2
Cordoba rotors are 1" thick.



He meant the diameters are the same, not the thickness.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2540693
08/24/18 12:46 AM
08/24/18 12:46 AM
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Colorado
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Bob J Offline
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Originally Posted By MRGTX
Michelin Primacy? Well, they're a good quality tire but also a pretty notorious low-grip, no-season tire. smile
I guess the question is where DO you push your car?

The rubbing on the front/bottom corner of the wheel arch when turning is a common problem but folks have found specs that work.

It's a damn headache to be honest.

If you look at Michelin all seasons, I agree they are not for handling. Now if you move up to a Michelin max performance summer they are very good. But if you want max stick go with there Cup tire. They are very sticky very soft and shot tire life but dam they stick. One down fall with the cup tires is they are only 130 wear rated so not legal for SCCA Cam class doing autocross.


07 Porsche C2 997.1 6spd DD and SCCA Solo II SS
68 Plymouth GTX Convert. 493cu Hotkiss Wilwood Classic air, Building for Solo II Cam
65 Chrysler 300 Convert. project
57 Desoto 2dr. Firesweep 392 Hemi,Wilwood Project with son
2003 Dodge Dakota R/T "DEAD"
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2540809
08/24/18 11:03 AM
08/24/18 11:03 AM
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For my street driven stuff I use the Michelin Pilots.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2541050
08/24/18 09:41 PM
08/24/18 09:41 PM
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Bob J Offline
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Yes I'm running Pilot Super Sports but there is a newer Michelin in that category that is said to be better but I have never ran them. I use to run Bridgestone RE-11 on the street and they were a great street tire but there are a older design and sizes are now limited.


07 Porsche C2 997.1 6spd DD and SCCA Solo II SS
68 Plymouth GTX Convert. 493cu Hotkiss Wilwood Classic air, Building for Solo II Cam
65 Chrysler 300 Convert. project
57 Desoto 2dr. Firesweep 392 Hemi,Wilwood Project with son
2003 Dodge Dakota R/T "DEAD"
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2541568
08/26/18 02:13 PM
08/26/18 02:13 PM
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Mequon, WI
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gzig5 Offline
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Pilot Super Sports are awesome if you can find them in the size you need. Actually a good value against competitors prices and relatively long tread life for a high performance tire.

Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2550949
09/17/18 10:39 AM
09/17/18 10:39 AM
Joined: Nov 2013
Posts: 111
Connecticut, USA
MRGTX Offline OP
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I added 1.5" lowering blocks from Mancini and it immediately drove better. I still haven't been pushing the car too hard through corners but the whole driving experience has improved in subtle ways.

I do see that the pinion angle seems to be off a bit more now (I need to get a gauge to measure it)...so that's the next mod.


Dart summer 2017.jpgDart 9-8-18.jpg
Last edited by MRGTX; 09/17/18 10:40 AM.
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2550977
09/17/18 11:38 AM
09/17/18 11:38 AM
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Best improvement will be other tires, BFG's look good but handle meh.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2551022
09/17/18 12:47 PM
09/17/18 12:47 PM
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jcc Offline
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Didn't read the thread, but I like new Mean look. up


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: Sorting out suspension...could use some advice (as always!) [Re: Supercuda] #2551036
09/17/18 01:33 PM
09/17/18 01:33 PM
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MRGTX Offline OP
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Originally Posted By Supercuda
Best improvement will be other tires, BFG's look good but handle meh.


No doubt about this.
The options for 15" wheel enthusiasts are almost zero at this point.

I do plan on setting up a set of 17s at some point but 17" performance tires are dwindling as well and 18s are just not going to work, IMO...so who knows.

Re: Sorting out suspension...could use some advice (as always!) [Re: MRGTX] #2551143
09/17/18 05:16 PM
09/17/18 05:16 PM
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Posts: 14,889
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Michelin pilots are available in 17's, was looking at a set for my 65 Cuda.

But my Cuda doesn't need as big a tire to "look right" either. So, YMMV.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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