Tire size up front?

WIth stock located uppers you are pushing it with a 225 45 17 IMO.

I run a 245 40 17 on my 65 (without even rolling the fenders) but I can get away with it because I have lowered my uppers and run quite aggressive alignment specs.

With the uppers in the stock position, the problem occurs on turns because the top of the tire will tip out inducing a rub on wider tires. With the shelby mod (which is basically free + the cost of an alignment) you can get away with more because the tire will no longer tip outward on corners (assuming of course you go to a compenent shop that will align the car properly once you have performed this modification)

The shelby mod lowers the upper a arm an inch.

The effect will lower your car anywhere from 1/4 to 1/2 depending on springs.

tylerrocks said:

Thanks for the quick replies, I have also heard that you should ballpark the alignment by starting off with 1/2 the shims you had before, any comment on this? Also, If you dont mind my asking, what alignment specifications do you run?

Tyler

Click to expand...

I can't comment on ballparking by removing 1/2 shims.

I always say put them all back were they were and drive slowly over to the alignment station....or in my case...get it all screwed up when pulling the arms and just hap-hazzardly put shims anywhere when you bolt it back But then again...my alignment place is 1.5 miles away on back country roads.

Specs i run:
-1 deg camber
2.0 - 2.5 caster
1/8" toe in

Which if your car is a daily driver will wear your tires rather quickly. If you are willing to roll fender lips if you need to I would think you could get away with

0 camber
1.5 - 2.0 deg caster
1/8" toe in

and a 235 45 17 - (this is the size I used to run on my car).

But you need to remember ever car is different, and if you are really trying to push the limit to rubber fitment, measuring is always useful because fenders get dented and fixed, frame rails get moved, these cars have long histories. Just look at my 275 40 17 on 65 post for evidence. Also general age of you suspesnion parts is a big factor here. if you still have 40 your old springs and control arms...235 anything is going to rub IMO

Also, manual or power...my 235s turned a lot easier than my 245 with my manual 16:1 setup when I'm driving slowly.