21 replies to this topic

[BG11XV]

hey guys im upgrading my wheel and tired on my outback , got way too much sidewall roll on my stock wheels atm for cruises 205/70r15 but there perfect for offroad so im keeping them garaged 

 

im getting these tho 

stock 07 wrx wheels with mc5s 

215/45r17 

 

the comparison is this :-

 

 

 

 

 

are these numbers ok and will it effect anything speedo or police camera wise lol 

 

 

cheers 

[skillionaire]

You'll be going slower than it says you are

[BG11XV]

is that the only downfall ? is there any way i can make it more accurate ?

so i should just put them on and drive ? 

 

 

this is the first time ive ever got aftermarket wheel so i dont know much about this stuff lol

[skillionaire]

Hi,

 

I'll let the rubber nuts weigh in, but the idea is to get as close to original rolling diameter as possible.

 

Cheers,

Nik

[BG11XV]

is that close enough u reckon ?

[CRUISN]

6.4% difference in rolling diameter which is unroadworthy and will put your actual speed way under the speedo reading.

[BG11XV]

shit really ? like do the police actually check that ?

[Harry88]

Alright mate. After doing a bit of research I reckon you if you want 17" wheels the best size to get tyre to get would be a 215 55 17. That will keep the diameter and circumference almost identical to stock. The speedo will only be out by -0.04% which is nothing

 

http://www.willtheyf...set2=55#content

[BG11XV]

oh ok sweet . will i find any trouble tho using the 215/45/17s untill they are worn 

 

only reason is im buying them from a good mate and they are brand new he used them for two weeks 

[Harry88]

Well the speedo will be out. I doubt a cop would pick up on them for a defect but the tyre profile is way to low. It would look pretty damn weird lol. Personally I would either buy someone elses wheels or get them and put the correct tyres on them and sell the 215/45/17's and try to make some money back.

 

It's a very common size so it shouldn't take long to sell them.

[CRUISN]

Speedo when it says your doing 100, you'll actually be doing about 93.

 

You can run them no drama's til worn then go to the 215/55/17.

[BG11XV]

ohh ok true only reason im doing it is i want decent looking rims but nothing flashy and my tires atm are way to high in the sidewalls for road driving and twisties lol 

 

 

thanks heaps 

[Robert]

my 195/60r15s are sloppy enough on the road haha

 

im going to 215/45r17 doing 100kph (speedo) i actually be doing 101.4 something 

[BG11XV]

how does that work ? is the converter calculator wrong ??

[Harry88]

how does that work ? is the converter calculator wrong ??

 

It should be under 100 not over.

 

http://www.willtheyf...set2=55#content

 

@Rob, are they 195/60/15 from the factory?

[Robert]

actually that makes more sense, the calc must have been wrong 

 

yeah that's the stock size of my car 

some gen 2s came with 14's

[Harry88]

Yeah all good man. 17"s will look the business!

[Robert]

They should just be legal i think, its only 1.65% out and 2 inches bigger than factory

[Harry88]

I really don't see it being an issue.

 

Anyways enough thread hijacking. Back to the original topic

[BG11XV]

lol i dunno wat do do was hoping to have them fitted for the hunter cruise been waiting to get then since nov  

 

i wonder if crazy tires in syd will swap these new tires for the right 55 size ones seeing as they are 2 weeks old