08-14-2023, 01:32 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
Quote:
Originally Posted by Streetwize
PatrickT if I may ask, what size and MFg of tires are on your cobra?
Mine are a little old so I'm looking to get a new set of 15"
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The tires I have on there today are Mickey Thompson S/T with the white letters facing in and painted black using Forever Black Bumper & Trim Dye. The sizes are 295/50 and 235/60. I inflate them to 26psi front and 24psi rear. Below are the weights on the tires with me sitting in the car and about a half tank of gas. I am a big believer in corner weighting our cars. I can't count how many times somebody has said that corner weighting was a waste of time for street cars and then when I finally convinced them to have their car corner weighted they came back to me and said how right I was. The MTs are pretty new and I have a few hundred miles on them. I have never driven a car with Avons so of that I know nothing other than what I'm told. I like my MTs and they stick very well on dry pavement; I have never driven them in the rain. No vibration through the steering wheel, good road feedback, they feel right, and sound right with the engine on. Just a few weeks ago I had the car out on one of my favorite really twisty roads going down hill and since there was no one behind me I turned the engine off so I could take some hard turns and listen to the car with out engine noise. I do that every few years just for preemptive purposes and you might be surprised at what you hear when you do that (it's almost like driving a different car). What struck me with these MTs was when I made really hard tight turns at moderately high speeds the tires sounded like when you wear new sneakers on a gym floor. I have not pushed them so hard as to drift as I just don't drive that hard anymore. I am told by other MT S/T owners that on the skid pad the tires will tell you before they let go and give more of that sort of notice than the Avons do even though the Avons stick better. What I mean is the MTs let go sooner, but slower, and the Avons let go later, but faster when they do. Now, again, that's not first hand knowledge on my part. Because I have six pin hubs mounting them was a slight PITA. I ended up using a Ranger Leverless Touch-Free Tire Changer and a Hunter Road Force Balancer and that worked well. Because I have the large Sierra brakes, I had to use the thin weights to stick on the inside of the front rims to clear the calipers. Room is that tight. Here are my weight numbers and, like I said, corner weighting your car and finding the right inflation IMO makes an absolutely night and day difference. I have a lot of aluminum on my iron block FE and the battery is under the right front fender well.
Left Front (703) Right Front (667)
Left Rear (756) Right Rear (725)
Cross Weights 1423 & 1428 - 50%
Left Weight Percentage 1459 - 51%
Rear Weight Percentage 1481 - 52%
Total Weight 2851
Last edited by patrickt; 08-14-2023 at 01:50 PM..
Reason: typos
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