Need help with wheel offset

Everything is a compromise. Most manfacturers skimp when it comes to wheels and tires. Here is a retail comparison (though manufacturers would be dealing with lower wholesale values. You can buy a nice set of 17" cast aluminum wheels and top notch Michelin tires for $1,800. If you go with a top notch wheel/tire combo in the appropriate sizes and same tire brand/model the cost would be $4,100. That is a difference of $2,300. That is quite a lot to add to the cost of the car, considering it's almost 6%. Most people can't appreciate the difference especially when they are comparing a 300ZX or RX7 to the Supra, when it was quite a bit more expensive already. Think about the lateral G's the Supra pulled with the stock setup. It was already way ahead of it's competition without the bigger wheels and tires. Your same question could be asked about the turbos. Why didn't they use a nice size single instead of the stock twins. Imagine a 500 crank hp Supra right off the showroom floor. It's all about compromise. Just be glad they put the money in a strong engine and drivetrain.

Later, Steve