How wide can I go all around? If not the same how wide can I go in the rear?

For an 86 Sport with 15x6 wheels? I wouldn't recommend much wider than stock, maybe a 215. Some people have put on 225s, but I wouldn't go that wide. Trying to shoehorn a wider wheel on a narrow rim is not a good idea and will have adverse affects on handling. Unless the sidewall is incredibly stiff, you'll have lots of sidewall flex and rollover.

Im saying not on stock rims. m going to buy a new set but I want something nice and wide. Preferably the same all sround but I want something fat!

215's are good for 7"~7.5" rims. Not 6" rims. I would not suggest anything wider than 195's for those rims. Want wider tires? Get wider wheels. Too expensive? Get a cheaper hobby. https://www.nopistons.com/forums/pub...DIR#>/wink.png Yeah, that was a bit harsh. But it's one of my pet peeves. Stick with the stock sizes for the stock wheels. The tire from 198x is nowhere as good as a modern designed tire of the same size.



I have 16x8 rims all around with 225/50's on them. I could have put 245's on them easily but would rather not. The handling is too important to me. I'm just talking about street tires. A good set of R compund Hoosiers for autocross is different. With them, 245's on an 8" rim is just fine. But they're not for the street.



With the right setup these sizes will fit without rubbing. 235 up front and 265 in the rear.

Oh, I see. 8" is the widest you can go with the same size all around. Unless you get the CorkSport wide fromt fenders. Then you'll be able to go with 9" rims all around.



But with the same setup I have, you'll be able to get some great grippy tires.

I HAVE SAID IT ALREADY I AM BUYING NEW RIMS !!! !! ! ! ! LOL

So 8 inch all around with 245's shouldn't rub then right? The thing is that I want to manuever good but want some nice fat tires you know the RWD machismo ! ! ! ! https://www.nopistons.com/forums/pub...1047683785.gif

it might be a bit hard to find wide 17" rims for a SE.



Not to mention the SE's brakes wont look flattering thorough them



Why dont you do a 4piston swap first then get the rims?

i agree. i know people who put 17's on cars with drums.... https://www.nopistons.com/forums/pub...1047683894.gif COOL!!!

I have 17's on my SE and the brakes look fine I think.. at least they're 4 wheel disc. What I think looks worse is 17's on a car with no drop at all.

wait, if he is putting these on a Sport, then he already has 4 piston brakes...



How much bigger are the discs on the 4 piston vs single piston?

here I thought a SE was basically a base model?

you're right Rob, it is the base model.. I was referring to the sport model he is getting on the road which has 4 pistons



Mazda had the base in 86 & 87 I believe and just changed it to the SE in 88. The only difference I know of is the original 86 base had steel wheels and the SE had the phone dials.

There is this car that's always at the autocross events. It's a late 80's Civic 4 door. It has 18's on it with little itty bitty brakes that are painted. Those drums on the back are barely larger than a fist. The drivers of that car have a good sense of humor and did this for a joke. They have the car sticker tuned with cheesey stickers as well just to go with the theme. They do well with this car. It's the chuckleheads that are convinced that 18's with baby brakes makes their car look better.



What is the rest of your suspension like? How much adjustability do you have? Swaybars? Coil-overs? Camber plates? Adjustable rear camber link? Etc? Camber should be adjusted for handling, but if you have any rubbing you do what you have to do. Sway bars help keep the car flat. Once I put mine in I noticed a lot less rubbing in the front. Rolling the front fenders helped a lot too. But my +30 offset is a bit wide so this might not really apply to you if you do your homework (unlike what I did https://www.nopistons.com/forums/pub...DIR ).



Going with a 5 lug conversion will give you a much better selection of wider wheels. With the right offset, you will have plenty of space in the rear for 245's. Something like a +35 8" rim in the back will be fine. Same offset for the front, but keep them to 225 or even 235. ARD T2 on the "other" forum seems to be the guru for FC wheel/tire fitments. Check with him before you start buying stuff if you aren't already 100% of any rubbing.

I think that the wider back tires will look good, but don't have them so wide that they stick out of the wheel well. But remember, you can't rotate your tires then.

not sure if you were referring to me or the guy who started this thread.. I have an SE and he has a Sport with 4 pistons and 5 lugs already.



Kind of off topic, I am happy with my current suspension and brake set up and I still have the 4 lug and single piston deal. My problem is that every year I've been changing too much on the car with not enough seat time and that is killing me. I finally have something that I'm getting used to and seems to be working well (right now): RB front sway bar, front and rear STB's, ES bushings, KYB AGX's, Eibach pro-kits (dont like), RB rear camber link, Hawk pads, Mazdatrix lines, Motul fluid, manual steering, weight reduction



I bought 17's to have something nice for the street compared to the stock 14" phone dials. I have kept the phone dials on the car though with Azenis since that is what I run for autocross and am barely street driving it. Next year I plan to get Tein front camber plates and GC sleeves with 450/325 Eibach's and do nothing else until the following year. My camber settings are -0.9 in the front (compensating for me in the car) and -0.5 in the rear. The toe is about as straight as he could get it. Also, keep in mind I have a lightened S4 base model.



My point is that if you're interested in racing, you should do one thing at a time and keep practicing.. need more seat time. Once I get used to my current set up, then hopefully I will pick up some time with the GC's, maybe some more camber, R tires and lighter/wider wheels, and maybe bigger brakes.



What do you recommend for alignment settings?

OK Ig you look at my SIGNATURe it says that I have an 88 SE that is becoming a parts car for my new 86 Sport. The sport it going to be my project bicth. Now I want wide tires out back and good handaling ones up front. What do you guys say size rims 17",18"s is 9" wide to wide for the back?

Sorry for the confusion FCmaniac, I just start typing and can't quite stop sometimes. I was trying to keep with RX7 13B 4 UR AZZ's original question.



9" in the back is fine. Some people even use 9.5" in the back, but that needs a spot on proper fitment. I'd stick with 17's as a maximum. Better tire choices. 8" is about all you can do up front. Even if you get those Corksport front fenders to have the same width tires all around if you want something such as 255/40/17 for example, you'll still have to remove the tires from the rims to rotate them front to rear. For the fronts wheels the offsets go into the teens while the rear stays about +35~+38. I forget what is a good offset when you use those fenders. I have yet to see anybody use them stateside. FWIW, they are knock-offs of BN Sports blister fenders over in Japan.

BACK FROM PAGE 12 LOL



So the reccomended would be 245/40/17. with an 8 inch rim what ofsets would I need front and back im getting ready to buy this week!

245's are a no go for the front. Go with 225's on a +35 to a +38 8" rim up there. I have +30 up front with 225's and with the stock suspension it rubbed. The back can handle +35 and +38 with the 245's back there. I have +30 with 225's on 8" rims in the back and there is still plenty of space to go back there. You could go with 9" rears with 245's or 255's. That'd be just fine having a staggered front/rear setup.



It really depends on the rims you want and the possible offsets which are offered from the rim manufacturer.

so to go the same all around 225/40/17 with a 8 inch rim with 30+ offset right?

Im doing 215/45/17 all round.... Waiting for car to be returned from paint! I went 45 series to fill up well and make larger than stock. 40 series look to small. Will check back when completed

Good call.. I went with 40 series when I got mine not knowing any better and they look like rubber bands.. just doesn't look right on an FC.

I'm like to suggest the mariah over fenders in the front instead of the corksport. The quality of corksport body parts are crap and i don't like the idea of replica parts. If you don't know FCs the mariah fenders will look exactly like stock but will let you run 255s up front. Right now i am running a staggered 17x8/9 with 37 offset 235 45 front 255 45 rear. For my next setup i am planning 17x9 all around with 255 40s I'll only have to buy two new wheels.

Max confirm sizes are



17x9 + 35 mm offset 235/40/17 tire

17x10 + 35 offset 275/35/17 tire on rear



17x9 + 35 mm offset is a bit tight... if you bottom the suspension out you will rub something.





The best combo is:



17x8 + 35 mm offset on 235/40/17 tire

17x9 + 35 mm offset on 255/40/17 or 265/40/17 tire (rare)



note even 235/40/17 tires are a bit hard to find. THe only ones are:

Toyo T1-S

S03

Dunlop SP 9000 and 8000

Michelin Pilot sport

PZERO Asym, and NERO but NERO does not have 255/40/17 or 265 or 275

AVS sport



My advice is 225/45/17 and 255/40/17 on kumho MX. I have heard good things about kumho and they are cheap. You are only scraficing 10 mm which is 1 cm. Very little in the grand scheme of things.