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-   -   Era 2054 (http://www.clubcobra.com/forums/era-speak-bob-putnam/112539-era-2054-a.html)

DanEC 09-16-2011 07:23 PM
Quote:
Originally Posted by DanEC (Post 1151378)
Will a 275/60-15 at 28 inches diameter fit an ERA FIA in the rear? They won't fit the 427 model. Max dia. recommended to clear is about 27 inches. Maybe the frame kickup is moved on the FIA for more clearance.
Will a 28-inch tall tire fit on the rear of an ERA? The ERA site says no???:confused:

FIA-ERA 09-16-2011 08:34 PM
John,

If I could I'd post a pic but I'm having a few problems with that. Jim's car sounds exactly how I did mine too. Send me your email again and I'll send you some pics. Regards, Matt

wolf k 09-17-2011 01:58 PM
Jpit, this car has big brake package and 15 in. wheels, no clearance issues. The rear of the car is lowered as far as the spring stops will go, the front is lowered to approx. 3/4 of spring stop adjustment travel. The backspacing on the rear wheels was increased by a local machine shop. I added 10mm spacers to the front wheels to fill out the fenders more. Rear tires just barely rub the inner wheel well on the harshest of bumps. 295/50 rear, 245/60 front. If you go the 15 in wheel route, I would suggest having the backspacing custom machined to your specs, there is plenty of meat on the Trigo wheels for this.

http://i298.photobucket.com/albums/m...n/DSC00547.jpg

I have no flex in the dash when turning the wheel. There is a brace that runs from the steering column bracket to the firewall, I would check the integrity of that.

strictlypersonl 09-17-2011 04:02 PM
Quote:
Originally Posted by DanEC (Post 1151615)
Will a 28-inch tall tire fit on the rear of an ERA? The ERA site says no???:confused:
It might, or it might not. If I told you it would fit and it rubbed, would you be p*ssed? I would be. :JEKYLHYDE

The whole philosophy of every ERA is that they are real cars, not hot rods that require all sorts of quirky compromises. Tire rub is one of those (un-tolerated) compromises.

DanEC 09-17-2011 06:59 PM
Quote:
Originally Posted by strictlypersonl (Post 1151765)
It might, or it might not. If I told you it would fit and it rubbed, would you be p*ssed? I would be. :JEKYLHYDE

The whole philosophy of every ERA is that they are real cars, not hot rods that require all sorts of quirky compromises. Tire rub is one of those (un-tolerated) compromises.
Actually, I've measured clearance on my (unfinished) car and concluded a 28 inch tire will not clear - at least on my car. I didn't know if the FIA might have frame modifications to provide more clearance or if I just blew my measurements. I would like to have used a 275/60 tire if I could have - but purchased 27 inch tires instead.

xb-60 09-18-2011 01:50 AM
Check Fullchat289’s thread, page 3, posts 33 to 45, (refer http://www.clubcobra.com/forums/era-...-2124-a-3.html ) for info about suitability 275/60x15 Mickey Thompson S/T tyres at 28” diameter.
(There’s also a comment there from Bob about the unsuitability of these for ERA 427s)
Cheers,
Glen

JPit 09-18-2011 08:51 AM
Wolf k, your car looks great. The way your car sits on the tires looks perfect. I am going to call the guys up at ERA this week and confirm that I can get 15in wheels over the big brakes, a ball park price for the whole project, and if they can do it over the winter.

Thanks for everyone's help

John

DanEC 09-18-2011 10:58 AM
Quote:
Originally Posted by xb-60 (Post 1151844)
Check Fullchat289’s thread, page 3, posts 33 to 45, (refer http://www.clubcobra.com/forums/era-...-2124-a-3.html ) for info about suitability 275/60x15 Mickey Thompson S/T tyres at 28” diameter.
(There’s also a comment there from Bob about the unsuitability of these for ERA 427s)
Cheers,
Glen
Thanks - interesting. I would like to know what is the critical difference between the 427 and FIA car with respect to this. Fender and lip design I guess.

xb-60 09-18-2011 07:04 PM
Dan and John,
Using 275/60x15 on the rear of ERA FIAs has been done a number of times to my knowledge, and Allen covered it comprehensively in the thread I mentioned above, but bottom line is definitely that if Bob says don't do it (for anything on ERA cars), he has a good reason to say it. He's the man.
Cheers,
Glen

DanEC 09-19-2011 06:52 PM
Quote:
Originally Posted by xb-60 (Post 1151932)
bottom line is definitely that if Bob says don't do it (for anything on ERA cars), he has a good reason to say it. He's the man.
Cheers, Glen
Absolutely - I wasn't considering going against Bob's advise and the ERA manual. I bought my rear tires with 27.0 inch diameter.

strictlypersonl 09-20-2011 08:28 AM
I'm not saying that those tires will rub. Only that I can't guarantee that they won't. There are variations in the body, not to mention not all tires rated to be a certain profile will measure the same. I have to be pretty conservative when I make official "factory recommendations".


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