5x115 vs. 5x114.3

[urbtactics]

i got an 03 impala that i just bought 3 weeks ago....and i got a practically brand new set of wheels and tires (that i just bought in May) and they are 5x114.3

come to find out GM loves to use that stupid 5x115 pattern.....this is my first GM vehicle...

anyways....i'm thinking .7mm shouldnt be much of an issue if i just use tuner lug nuts and hubcentric rings.....

i googled this up and i seen alotta folks who use different cars that run with this "mod" successfully with no problems or vibrations....but i cant seem to find anybody with an 03 impala who has tried this......

normally i wouldnt try to bypass the pattern issue, but i just bought these wheels 3 months ago and i love em.....and what kills me is i seen a picture of an impala with the same exact wheels....so i'm thinking they must have done the same thing i'm about to do to get them on.....

any thoughts before i try this out?

[BNaylor]

It is common practice for GM "W" body cars owners with the Grand Prix, Regal and Impala, etc. to use the wheels with the 5X114.3mm bolt pattern. These are commonly referred to as Ford Mustang wheels. There is a much better aftermarket variety out there versus GM type wheels with the 5X115mm pattern. No mods are needed. Bolt on. However, make sure the aftermarket wheels have the proper offset and acceptable width.

[Blue Bowtie]

Isn't that also known as a "4½-inch bolt circle" by most of us?

[BNaylor]

Originally Posted by Blue Bowtie

Isn't that also known as a "4½-inch bolt circle" by most of us?

Haven't you heard Jeff. SAE is out metric is in?


My GTP with 18" Mustang Wheels aka 5X114.3.....

[urbtactics]

thanks man, I got em put on a week ago and theres no vibration whatsoever...i just had to get the rear fenders rolled due to the fender rubbing on the sidewall during dips and sharp cornering.....got the fenders rolled, no problems whatsoever, didnt even need hubcentric rings

[Blue Bowtie]

S.A.E.? They really had nothing to do with it. The thread standards were in place (1864) well before there was such a thing as an automobile (1885), let alone a society of engineers in that field (1905), even though the "official/final" adoption of UNC and INF threads didn't occur until 1949.

Metric in? You'd think that would be the case, but NOTHING metric has ever landed on the moon and returned. Only Imperial stuff can do that. Once we lower our standards enough...