alloys for BG

[DrSilver]

hi guys, will 100mm alloy wheels fit a 91 Bg astina? (Its 100mm between opposite studs.
thanks!

[pr1mo]

certainly will. 4X100 stud patten is what you need

[DrSilver]

thanks mate!

[Rupewrecht]

make sure the offset of the rims is about +37 too otherwise you might have scrubbing issues

[geetee]

also make sure the centre bore is correct or the wheel won`t fit on the hub!
check out this very handy link:
http://www.tyresave.co.uk/fitment.html#MAZD

[DrSilver]

hi everyone,
is my centre hole size 54mm? i have a 91 astina 1.8i sohc.
cheers!

[DrSilver]

will an offset of 45 fit me astina?

[pr1mo]

yep..wont be perfect but it will fit

[DrSilver]

what do u mean wont be perfect? will it affect the performance or something?
Is the centre hole size = 54mm?

what does offset mean? how does that affect a car?
thanks

[geetee]

your centre bore is 54mm.
you can fit wheels with a slightly bigger bore but not smaller.
the offset should be between 38 and 42mm.
any bigger or smaller than this and you risk fouling either the wheelarch or the suspension strut.
the best thing to do would be to test the wheels your after on the car and check thouroghly if they foul anything. check with the car on a jack and on the ground turning the front wheels lock to lock.
what kind of wheels are you looking at?
if the offset is outwith the limits for your car, it will affect the handling and suspension geometry, and also the wear on your tyres and suspension components.
hope this helps!!! :wink:

[DrSilver]

thanks geetee,

I better not buy these mags then cos they have an offset of 45.
hey, if the centre hole is about 67mm, can i get locating rings for the mags? how much do they cost approx?
cheers!

[geetee]

don`t know if you can get locating rings or if you would need them. the bolts alone would be plenty strong enough to hold the wheel on! and i`m not saying that a 45mm offset will cause you problems, just that by fitting wheels with the wrong offset you are in effect changing the suspension settings. but many people do fit aftermarket or "other manufacturer" wheels and never have any probs!
if your in any doubt then the best thing to do is follow your instincts and look for another set! :wink:

[DrSilver]

hey,
check this article out:

Spigot size is a bit trickier....the spigot is the bit in the centre of the hub that you rest the inside centre of the wheel on whilst aligning the studs and screwing back the wheel nuts. On generic after market wheels, the spigot hole inside the wheels is a lot bigger than the spigot on the car. So what you need to do in this case is fit spigot locating rings. These are just rings of aluminium or hard plastic, that fit over the spigot on your car and then have a proper fit with the spigot hole on the wheel. If you don't have the spigot taking all the weight of the car, chances are you'll break one or more studs when you drive the car hard or have to brake hard. Remember the wheel nuts are simply there to hold the wheel on, NOT support the weight of the car. Also, as there is nothing to centre the wheel, you'll notice the wheels go in and out of balance because as you drive around, they'll move around on the hub.

[Cosmo Dude]

That's a new one on me and I've been doing this 'n' that on road, race and rally cars for close to twenty years. Has the author of that ever seen a wheel being ballanced? it's done off the car. The wheel nuts don't sit flat on the wheel surface they have a curved face that sits into a concave area around the hole the stud fits through.
Thanks I needed a good chuckle :lol:

[geetee]

I`m with cosmo on that one silver! when you put the bolts in the wheel they are all countersunk so the wheel will centre. if it didn`t then believe me you would notice long before the bolts snapped!!! imagine how much it would cost for all these aftermarket wheel manufacturers to make wheels with the correct centre bore for all car makers!!! :lol:

[DrSilver]

hi guys, i was gonna buy some 15" rims today, but apparently, i need to get low profile tyres with them(my actual tyres are 185/60/R14, with the 15" rims, i will need to get 185/50/R15). Isnt there a way of adjusting the speedo so i dont need to get the low profile tyres?
cheers.

[Cosmo Dude]

You'd be better with 195/50/15 to retain the rolling diameter. You could have the speedo adjusted but the cost would be higher than that of the correct tyre.

[geetee]

the 195/50/15 option is the way to go mate. you`ll get a bigger choice of tyre too.
i don`t think 185/50`s are very popular. why don`t you want low pro`s?

[DrSilver]

what do u guys think about 195/55/15? are they much different to 195/50/15?
i didnt want to go low profile `cos they cost too much :wink:

[geetee]

they slightly higher.
the 55 on the tyre refers to the percentage of the width ie. 195mm.
so 55% of 195mm gives you the tyre height = 107mm.
the 50`s would be = 97.5mm.
doesn`t sound much (10mm) but it does make a difference to the looks and speedo. :wink: