Fiat 124 Spider Forum banner

41 - 53 of 53 Posts

·
Registered
Joined
·
291 Posts
In the process of working out my 16x8 +25 fitment now with an installer. After consultation, to fit the wheels without poke I have purchased front and rear camber arms (both upper), may potentially have to reduce caster on the front and "shave" the inner guard lip (as opposed to roll and deform the guard/bumper junction).

The front guard is the most challenging due to how the inner is connected to the lip. The installer has recommended more camber as opposed to shaving if I want to maintain the guard inner.

A 17x9 +20 would require a decent amount of work to fit for sure.
 

·
Registered
Joined
·
733 Posts
I have rubbing on 225/45R17 tires and 1.3" drop. The rub is all vertical, meaning tires are too tall rather than too wide. Outside diameter of 225/45R17 is 25", last safe size I had was 215/45R17 (24.6" diameter), never exceed this if you're lowered by 1.3". I found out the hard way that new fender liners on our cars are SUPER DUPER EXPENSIVE!!!
 

·
124 Spider Vendor
Joined
·
807 Posts
Discussion Starter #46
Custom 17x10’s or a 5-lug hub swap/adaptor?
Indeed we might do that just to perfect the fitment. Got an odd set of 52mm 17x10 6UL wheels here that we used on NC with spacers to figure up our new NC 17x10 shown below (final offset 17x10 production Hypergram below is 43mm). We could use 4x100 to 5x114 converter from Blox or similar and end up around the offset I think we will need to make 17x10 work on the Fiata/ND chassis. At last BMW Club Autocross we ran the Fiat 124 against this NC. The Fiat makes more power, but the mechanical grip advantage of this 17x10 setup was faster in every turn and the Fiat ended up about 2 seconds behind. The results of jumping seats between these cars was clear: the Fiat needs wider than 17x9 for this game of grip! Notice the NC Budget Racer below also has the Lexan rear spoiler, that has proven good for about half a second advantage at autocross, working on same for the Fiat 124.

 

·
Registered
Joined
·
2,368 Posts
I have rubbing on 225/45R17 tires and 1.3" drop. The rub is all vertical, meaning tires are too tall rather than too wide. Outside diameter of 225/45R17 is 25", last safe size I had was 215/45R17 (24.6" diameter), never exceed this if you're lowered by 1.3". I found out the hard way that new fender liners on our cars are SUPER DUPER EXPENSIVE!!!
will you try 40 tires?
 

·
Registered
Joined
·
733 Posts
will you try 40 tires?
225/40R17 has smaller diameter than 215/45R17 so it will not rub. Use this to calculate diameter


Just don't exceed 24.6" if you're lowered by 1.3".
 

·
Registered
Joined
·
416 Posts
I feel like I cheated by running a 225/45r16 on 16x8 with a 23.9” diameter. No rubbing lowered 1.3” and still get a tall tire for the street. It even lowered the car slightly more.
 

·
Registered
Joined
·
184 Posts
Indeed we might do that just to perfect the fitment. Got an odd set of 52mm 17x10 6UL wheels here that we used on NC with spacers to figure up our new NC 17x10 shown below (final offset 17x10 production Hypergram below is 43mm). We could use 4x100 to 5x114 converter from Blox or similar and end up around the offset I think we will need to make 17x10 work on the Fiata/ND chassis. At last BMW Club Autocross we ran the Fiat 124 against this NC. The Fiat makes more power, but the mechanical grip advantage of this 17x10 setup was faster in every turn and the Fiat ended up about 2 seconds behind. The results of jumping seats between these cars was clear: the Fiat needs wider than 17x9 for this game of grip! Notice the NC Budget Racer below also has the Lexan rear spoiler, that has proven good for about half a second advantage at autocross, working on same for the Fiat 124.
You think you can make a 17x10 fit with the stock fenders?

I am dumping my 124 in favor of buying a cheap NC to track, but it will still be really cool to see an ND chassis on 17x10's!
 

·
124 Spider Vendor
Joined
·
807 Posts
Discussion Starter #52
No 17x10 in stock Fiat 124 fenders, massive roll/pull at the very least, will see....and likely just have to cut and add flares.

In contrast, that NC is pretty easy fitment of 17x10, good lip roll still needed but no flares for our new 17x10.
 
41 - 53 of 53 Posts
Top