Wheel / Alloy Replacement

[Ewan27]

Hi guys,

 

Let me apologise for

 

A) A noob question, I have done a lot of research but I am still unsure about the whole tyre/wheel setup.

 

Asking questions not about a 350z, but a Mustang. I have posted this in off-topic for this reason. This is just such a knowledgeable forum I was hoping someone could answer my questions.

 

 

Background

 

 

I have just imported an s197 2007 V6, the wheels are chromed but have really bad corrosion. I have showed them to a couple of specialists and in order for them to be repaired they need de-chromed and then powdercoated/painted. I want them in a gunmetal type colour - this is going to cost upwards of £350 and even then they cannot guarantee me a good finish due to level of corrosion. The tyres are all brand new so I want to keep them. I have decided getting a new set of alloys in my desired colour.

 

 

Details

 

 

Tyres - Toyo PROXES TR1

 

Front - 245/40 ZR19 - http://goo.gl/HmtQgq

Rear - 285/35 ZR19 - http://goo.gl/nkOPKv

 

Wheels

 

19" AT-326 Wraith - http://goo.gl/nyGdZ1

 

I am unsure of the specific details, but from the research I've done I think they are the one or both of the following.

 

8.0 5x114.3 - http://goo.gl/6olPQM

 

9.5 5x114.3 - http://goo.gl/idwBSF

 

Does the 8.0 / 9.5 relate to tyre sizes? Is it possible (or definite) I have different sized alloys given that I have different width tyres? Will I be able to see the exact measurement (including offset) if I take the wheels off?

 

 

What Wheel Options Do I Have?

 

 

I have seen these wheels which are reasonably priced and in a good colour.

 

Calibre GTR - http://goo.gl/BRNB0L

 

As you can see from the link they are 8.5 on the front, will these still fit, given that my current wheel is 8.0 (I think)? Also on the link the tyre options for this wheel are 245/45 front and 275/40. Can anyone explain to me why this is?

 

From google I got the following information, is this accurate? If the offset of my desired wheels is 35 (I presume this is what ET35 means?) and by standard it is 45, what does this mean?

 

Center Bore - 70.3

Offset - 45

Mounting 1/2

 

 

Thanks!

[hensh65]

Rim width Minimum tyre width Ideal tyre width Maximum tyre width 5,0 Inches 155 mm 165 or 175 mm 185 mm 5,5 Inches 165 mm 175 or 185 mm 195 mm 6,0 Inches 175 mm 185 or 195 mm 205 mm 6,5 Inches 185 mm 195 or 205 mm 215 mm 7,0 Inches 195 mm 205 or 215 mm 225 mm 7,5 Inches 205 mm 215 or 225 mm 235 mm 8,0 Inches 215 mm 225 or 235 mm 245 mm 8,5 Inches 225 mm 235 or 245 mm 255 mm 9,0 Inches 235 mm 245 or 255 mm 265 mm 9,5 Inches 245 mm 255 or 265 mm 275 mm 10,0 Inches 255 mm 265 or 275 mm 285 mm 10,5 Inches 265 mm 275 or 285 mm 295 mm 11,0 Inches 275 mm 285 or 295 mm 305 mm 11,5 Inches 285 mm 295 or 305 mm 315 mm 12,0 Inches 295 mm 305 or 315 mm 325 mm 12,5 Inches 305 mm 315 or 325 mm 335 mm

 

hope that answers part of the question

[Ewan27]

Thanks, but I can't really read that given the formatting. Could you link me to the website you got that from?

[hensh65]

Sorry that didn't paste as well as I would have hoped.

 

http://www.brick-yard.co.uk/forum/tyre-size-for-rim-width_topic60146.html

 

Just match rim size to tyre size, I am not 100% on ofsets so I will leave that to someone who is

[hensh65]

Rim width Minimum tyre width Ideal tyre width Maximum tyre width

 

8,0 Inches 215 mm 225 or 235 mm 245 mm

 

8,5 Inches 225 mm 235 or 245 mm 255 mm

 

9,0 Inches 235 mm 245 or 255 mm 265 mm

 

9,5 Inches 245 mm 255 or 265 mm 275 mm

 

10,0 Inches 255 mm 265 or 275 mm 285 mm

 

10,5 Inches 265 mm 275 or 285 mm 295 mm

 

Hope this works better

[Ewan27]

Great, cheers. I'm confused as my current wheels are only available in 8.0 or 9.5 and my current tyres are 285 wide, according to that chart they shouldn't fit. Or is this just saying you shouldn't be running that setup?

[marzman]

Whatever you buy, you should try to make sure the rolling radious of the new wheels/tyres matches that of your old setup. So whilst the above post gives an indication of the usual tyre sizes on said widths, it doesnt take into account what your current rolling radius is.

 

Google search for a tyre size calculator and figure out from there how to work out your RR.

 

As for offsets, yes if you take your existing wheels off they might have the offset stamped on the inside of them. Note front and rear offsets could be different.

 

To work out your offsets, i believe it's the center point of the wheel width (so 4.25" in your new wheels case and then subtract 45mm from that for your +45 offset.) You then need to work out if that will leave you as much space as your existing wheels when mounted to the hub.

 

See graphic below to try to explain.

 

http://kgm.tiwing.com/calcs/img/offsetdiagram1.jpg

[Ewan27]

Thanks for the replies. I now have a better understanding of all the numbers! To clarify:

 

Current Tyres

Front - 245/40/19 (wheel width range 8 - 9.5)

Rear - 285/35/19 (wheel width range 9.5 - 11)

 

Current Wheels

Offset - 45

Front - 19 x 8

Read - 19 x 9.5

 

Desired Wheels

Offset - 35

Front - 19 x 8.5

Rear - 19 x 9.5

 

Using an online calculator (as suggested above) these are the differences:

 

Front - Inner Clearance: 4mm MORE, Outer Position: EXTEND an extra 16mm

Rear - Inner Clearance: 10mm MORE Outer Position: EXTEND an extra 10mm

 

Does anyone know if these differences will be a problem? From the reading I've done, all the S197 Mustangs (05-10) will take the same wheels, the only difference being the GT and other high spec models have bigger brakes. I have the standard V6 Mustang, which has smaller brakes so I guess I am some leeway on the inside?

[StevoD]

Small intresting fact new mustang wheels will go on a 350z, Have a mustang with rays

Edited September 6, 2013 by StevoD

[Ewan27]

Yeah I noticed they have the same bolt fitting. Wish I'd taken my Volk TE37's off my 350z now!