Locking wheel bolts

[Stuie]

I know questions have been asked about locking wheel bolts/nuts before, however ive done many searches and still cant find what im looking for. Im looking at getting the McGard Ultra bolts (39.9 mm as i have spacers), and i have 17" compomotive alloys. Will these fit ok?

The reason i ask is because i went into halford the other day to ask about getting new ones, and the first thing they said was "what wheels do you have?" i answered "compomotive" and straight away they said, "no sorry we dont do locking wheel nuts for compomotive alloys"

So do i need specific bolts or am i able to use the Mcguards as i always intended?

Cheers

Stu

 

[Stuie]

i have a mk3 ibiza cupra by the way

 

[Stuie]

anyone???

 

[RickC]

try motorworld, the lads in the lincoln branch actually know what they are on about and i have seen longer McGard bolts on the shelves, do you need tapered or rounded?

 

[Stuie]

i really dont know which i need. how can i tell

 

[JKing]

If you take one of the bolts out the end will either be flat or tapered. It depends on the style of alloy you have hence why the halfords guy asked the question.

Tapered

Flat

 

[Stuie]

ahhhhhh hahaha sorry. yeah its tapered i need.

 

[Ruddmeister]

ahhhhhh hahaha sorry. yeah its tapered i need.

Measure the thread length on the existing bolts you have in mm and then get the corresponding McGaurd bolts with tapered seats to suit.

Also as a rule of thumb (told to me as being industry standard) the thread needs to be a minimum of 8 full revolutions into the hole.

Otherwise the bolts are too short. May not be industry standard but seems a pretty good rule of thumb

 

[Stuie]

ive already got the measurements. Bolts need to be 39mm (well the thread does because of spacers)McGuards do 39.9mm tapered bolts, im assuming these should be fine then

 

[JKing]

yeah 0.9mm isn't going to make any difference so they'll be fine

 

[Stuie]

cool. Thanks for the help guys, will need to get them on order asap

 

[JKing]

I'll be doing the same once I've ordered my spacers

 

[Stuie]

McGards do radius seated and cone seated, which one will i need? both appear almost the same. Cone has a slightly longer tapered bit compared to radius. You can only get the radius type in the length im after though. Im assuming this will be alright

 

[CatB1]

VAG cars normally come with radius bolts,aftermarket alloys normally require the use of countersunk bolts.Just look at the wheel to determine whether its a radius or a countersunk hole.My betting is a countersink.

 

[Stuie]

right....ok, looks like im going to need the "coned" seated ones as mcgard put it. However my next problem is, i need a 39mm thread but the longest they do in this type of seating is 37.9mm, 1.1mm too short. Will this be ok or not?

Link shows mcgard bolt sizeshttp://www.mcgard.com/deutschland/englisch/e_frameset1.html

Cheers

Stu

 

[Saul]

why not go to the 42.1mm long one?

p/n 27013

 

[Stuie]

yeah im quite happy to get the 42.1mm one if theres not going to be any issues with the extra 3.1mm

 

[Saul]

i very much doubt it

 

[Stuie]

right, that will be the bolts i buy then, thank you all