23 replies to this topic

[Heath]

Don't really know about the backspacing, but 7" being the widest doesn't sound right at all. Is that the limit of Convo Pro's availible backspaces or something? Sounds weird

Somebody who's dealt with convos should be able to confirm that because they've probably gone through the same process.

[dattoman]

Gav
Go see Stan at Allstreet wheels and Tyres and he'll measure them up for you
I spoke to him recently about my hatch and he said he can get 17x 9.5" under the back of my unflared hatch with minor mods he was going to show me

Copy of email
As for fitment if you don't already know, I offer a measure service to avoid any problems, suspension, brake & body tyre/wheel guard clearances or modivications. This costs $110.00 insotre or $150.00 onsite (Perth Metro) Full responsibility is on us. Please call to book an appointment for this. As for sizes of wheel I can make 17x9.5 fit under your rear guards with slight modifications that I can advise you with. Much more to discuss with you so please call me Tues, Wed & Thurs between 12.00 to 6.00pm

Regards
Allstreet




Stan & Rita
Allstreet Tyres & Wheels
Allstreet Metal Specialties
Ph: (08) 9359 3888 Fax: (08) 9359 3444

[LS1LX]

Minor mods, haha. yeah big hammer does the trick.

Personally I found optimal sizing on unflared car to be 7" on front, without lipping the guads and 9" rims on the rear, with lips rolled. I wouldnt go larger then 9" rims on rear unless you get the sledge hammer out.

Front tyres run a 205-225 and rear you can safely run 255-265, just get custom offset rims made, if you buy off the shelf commodore rims you'll be loosing valuable space.

[Toranavista]

Whether the rims fit or not will depend on the rolling diameter of the tyre and the offset. As a yardstick I know that for 15� you can fit 15 x 7 front and back with a +25 mm offset and 195/55/15 and 225/50/15 respectively. You could substitute the 195 for a 205 but risk some rubbing. The + 25 mm would equate to a 4.5� back space on the 7� rim. You could get some wider rims under the back or lessen the offset. The 3 3/8 offset on the 6 � rim would leave 2 5/8 on the outside compared to the 2 4/8 in the example I gave. As for the backs they would be 3 5/8 on the outside compare to 2 4/8 in the example I gave. Keep in mind that the track for the front of these cars is 1� wider than the back from factory. I would personally go the 4� backspace on the 6 inch rim to give more clearance and make the distance under the wheel arches look more balanced. The offsets given sound OK to me for the convo pros for a flairless hatch, but get as much advice as possible before purchasing.

[Toranavista]

I have Simmons V5 8.5" x 15 on the back of my unflaired SLR5000. I dont think you need to go as wide as that IMHO.

[355LX]

With a motor with a bit of torque and hp, just a 7 inch rim could make traction an issue if you want to lean on the loud pedal from time to time. 8 inches does'nt sound much, but does make a big difference and makes for a more desirable and practical option.
Personally I've got 17x7.5 that fit on the back of my unflared hatch. But I'm thinking of ditching these rims for some better looking and wider ones, hopefully with some minor mods to the rear wheel well's, I'll squeeze some 17x9's in there, should'nt be a big deal, and with over 400hp on tap, I'll need all the rubber I can muster!!

Dave

[LS1LX]

I run +43mm offset on the front of mine, 17x7" rims but I do have hoppers kit (10mm track increase) The 17's clear over the balljoint with miles to spare.