Whats the spline size on the gtir ?

http://www.ebay.com/itm/4-WHEEL-SPACERS-ADAPTERS-4x100-to-4x114-3-1-THICK-4-LUG-4x100-to-4x4-5-/271217862403

that sort of spacers I'm on about

ive got a set like that which bolts on to the hub first but id rather have extended studs then one bolting into another.

technically speaking there shouldnt be much weight on the studs because you have to use spigot rings for the weight to be supported by the hub not the studs. If i was just to put spacers on without putting any spigot rings then they could possibly snap. I guess theres only one way to check

Don't know how much, if any use this is but I recently brought a set of Greyston extended wheel studs, M12x1.25 with the 14.3 spline which they list for nissan & they 100% do not fit, the spline pitch is different to the stock ones so they won't seat in the hub correctly

Spline is 14.3 on nissan.
Buy very high quality only & for nissan subaru fitment & chance of issues is minimal.

I was thinking of going to m12x1.5 because i already have a set of really good wheel nuts in that size. 100% positive that its 14.3mm? Im about to order a full set and theres no returns haha

I used 14.3 myself with no issue.
It was short collar spline & flat shoulder as in image below.
Was subaru or nissan fitment, pressed in hub perfect.

where did you get yours from? are they good quality?

I got mine from Ratchada pitstop&race which a tuning & accessory parts store. used same studs on Subaru too & had no issues to date.
Mine had NEO packaging for brand.
Looked identical to Grayston style stud.
Grayston are uk based & a big supplier of specialist studs & I believe their stuff gets rebranded under quite a few labels.
Few motorsport shops use grayston so probably decent choice.

throw a link up of what you considering ...

I bought these this week for 20mm rear spacers I'm fitting:

https://www.ebay.co.uk/itm/371021933053

But having a nightmare fitting them, there's more splines than standard studs. Ive tightened a nut up against a socket to pull the stud though but can't get the last 3mm through into hub.

I've machined a bit of the spline off as these ones are a few mm longer than standard ones, if I could get it all the way in I didn't want it fouling the disc, pushing it out etc



As you can see it's mauling the splines trying to get it in  

Gaz

That's no good, certainly seems some is off with them. Out of curiosity what were you using to tighten them up rattle gun or ratchet?

Long extension bar mate, machining the splines to same as stock ones I managed to get them in



Lowered car down moved it back and forwards to settle tyres, noticed wheel seems to kick out at top slightly, guessing moving wheel out 20mm I need to adjust the camber, boo. Whole car needs 4 wheel alignment anyway.

That's good you got them to fit mate, just abit of mucking around.

Lucky you got lathe, was it mainly spline length or also spline diameter a bit tight !
What was actual spline diameter before tweaking .
ones I used fitted as easy as oem, only real visual difference on mine was splines had a tiny machined taper at back so act as gap catch any fitting debris, does seem like some differ in dimensions or it a tolerance issue ! as recall few people having stud fitment issues over the years.

Mine were tight but went long socket and long nut so it did not strip it or stud and few hits from behind