Best size tyres?

[Steve Burnett]

What would be the best size of tyres to fit 17x8.5??

245 45 R17???

[banned advertiser]

235\'s
Used that size on fronts and wont be over stretched on those rims sizes, 245 would fit.

[Steve Burnett]

Any reason why you might want 235\'s instead of 245\'s?

Pic of my wheels, im well happy with them

[Shark]

235/45 17  will give yuou a rolling diameter almost exactly the same as stock 225/50 16

245\'s would make your speedo and odometer a bit iffy.

[Steve Burnett]

Now thats a good reason.

[Steve Burnett]

Any effects on handelling running 235\'s as opposed to 245\'s?

[cruiser]

OMG.... where did you get those wheels ? Those are THE SEX!
How much ?

[Shark]

Originally posted by Steve Burnett
Any effects on handelling running 235\'s as opposed to 245\'s?

Shouldn\'t make a big difference.  stock is 225 all round so handling should be fine.

[ro284]

225x50x16 is the same size tyres as a Ford Probe, (FWD) Mine are fronts 235x45x17, rears 255x40x17, when i replace the rears it will be with 265 Eagle F1! IMO i think the extra power of an RX7 need those size tyres and they suit the car very well, i dont think you would see a Porsch with 225 on the rear.

[John Yorke]

My stock 17\'s came with 235X45 front and 255X40 rears

[kevint]

Originally posted by John Yorke
My stock 17\'s came with 235X45 front and 255X40 rears

Just as Mazda intended for 17x8 at the front and 17x8.5 at the rear

[Shark]

The FD\'s which came out of the factory with 16" rims had 225/50/R16 and the drive on them is fine for standard power output.

putting 265\'s on will throw your speedo and odometer off.

Steve, if you haven;t already bought tyres, probably as well to stick with Mazda sizes of 235 front and 255 rear.  
From the comments above, sounds like they would fit fine on your wheels.

[Steve Burnett]

Not bought them yet.

I thought 265 were for 9\'s at the rear? 225\'s for 8\'s at the front?

I want to keep the spedo as close to the correct reading as possible.

[Shark]

PM\'d you my number mate, give me a call.

[RX-HEAVEN.COM]

If you need to dial in the correct speedo reading, there is an adjustment pot on the speedo circuit board.
We check road speed with GPS at say 3000rpm & then with the back of the car on axle stands adjust this trimmer until the speedo reads the correct speed at 3000rpm
Its as easy as that!!!