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Discussion Starter #1
I've done some looking for bigger wheels and tires (I really REALLY need new tires, my winter tires can't take much more of the heat here before I trash them). I got offered by a member of a car club I am part of to buy his Volvo S60 "Pegasus" style wheels. They have the following dimensions...

Diameter: 18"

Width: 8"

Offset: 46mm

Backspacing: 6.31"

The stock 15x6.5" wheels I have on my 94 Cougar have the following dimensions...

Diameter: 15"

Width: 6.5"

Offset: 39mm

Backspacing: 5.29"

Are my calculations on these two wheels correct? The higher offset # means the mounting face of the wheels that contact the rotor are closer to the outboard edge of the wheel on the Volvos right? So this would make the outer rim of the wheel fit closer to the center of the car, and the inboard rim would obviously sit much further inward, correct?

And what would I want to look into for making the Volvo wheels fit my car? I did a little forum thread searching on TCCoA and found a few people have looked at the Pegasus wheels before, and it seems like they were suggested to get some spacers to make it fit correct. I would want 7mm wheel spacers, as well as hub centric rings if the bore of the Volvo wheels are larger than my stock wheels, right?

The deal is with brand new, never used summer performance 225/45/18 tires. The package would be for between $450 and $600 depending on how far I drive.
Just looking at what I would have to go through to have some bigger wheels and wider tires.
 

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Those wheels would be OK with spacers, but the tires are a bit short for an MN12. You should also find out the load rating on them, should be at least a 95 to have enough capacity for the weight of your car. 245/45R18 is a better 18" size for an MN12.


cheers
Ed
 

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Discussion Starter #3
Thanks Ed. I think I'm going to just grab a set of used 15" tires for my car at the moment. Do you know if 195/65/15 tires will fit on my stock wheels? I found a set of GoodYear TripleTread tires with 30k miles on them for $130
 

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They would fit the wheels, but are WAY too small for you car ... that's for a Focus / Cavalier sized car. You should be looking for 205/70R15 (not so common any more), 215/70R15, those were the OEM 15" MN12 sizes, or 215/65R15, which was the 91-93 Sport size.


cheers
Ed
 

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Discussion Starter #5
I plan to get some 205 or 215 size tires eventually, but these will work for now since I am on a tight budget of less than $1000 to my name. Next step for the car will be new springs and rear brakes with a fluid flush.
 

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Discussion Starter #6
So after putting my 195/65R15 tires on my car for use this one summer so I can save for a good set of 205/70R15 summer tires, I have noticed my speedo is way off. I know it will be off by a bit considering there's less overall length of travel per revolution of the wheel now, but I have to go with my speedo at 85mph to be continuous with traffic in the 75-80mph range! Although...my acceleration is much quicker from less weight and the compound being better suited to warm/dry conditions. I also notice the handling is razor sharp compared to the tires I had on last fall before buying my winter tires. I guess there's trade offs for everything.
 

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Just make sure those tires stay properly inflated ... they are made to be holding up a 3000 lb car, not a 3700 lb MN12. If they get underinflated, you could exceed the load capacity of the tire and have issues.


cheers
Ed
 
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