18x8's rubbed?
damn damn damn damn damn...
And I was hoping to scoop up some OZ Crono Evolutions... TireRack recommends 225/40's on them.

Suppose I'll have to go for the 17-inchers.. can fit 225/45's on those puppies. Huzzah for Pirelli.

 

NC_MP3,

Where on the tire was this cutting happening?, on the outside and if yes then how far away from the edge of the rim. The rims im looking at are 18x7.5 with 215/35-18 tires. Im really wanting these 18s but it doesnt sound good so far

 

I thought I'd help you guys out since I am a big help when it comes to wheel fitments on several applications. Especially on the cars I own as project vehicles.

HISTORY: I am a huge Rotary fanatic and vend suspension/tires/wheels/brakes to the rx7club.com forum. Check us out in that section. We carry OZ, BBS, SSR, Volk Racing: big time, Fikse, Kinesis, Racing Hart, several other import Forged wheels. Not to mention the hundreds of cast knockoffs available.

The way we work is to donate funds based on revenue generated via the forum. It has worked surprisingly well and allowed people to receive great discounts on product while indirectly donating to support the future of this community.

Wheel Information:

Wheel diameter is arbitrary, offset is dependent on the width of the wheel. Therefore all info will relate to all diameters of wheels. It all comes down to the tire sizing to get the proper O.D.

7" = +44 minimum and go more positive, up to a +50
7.5" = +48 minimum - +5?.

I am currently using +45 18,7.5's on the MP5 and I rub by a couple of mm's. I had my body guy check out the fenders to see if rolling was an option and it was not. Trimming the fender is also not an option, so I would reccommend conferring with me or another extremely reputable wheel retailer that is out for your best interest.

I emphasize that a +45 will not work on a 7.5" wheel, and a +40 will not work on a 7", and a +50 will not work on an 8" width.

8" ers will work but I would suggest a low +50 mm offset, although it may induce problems in the front. The use of coilovers would allow for more interior room.

Any questions: autornd@hotmail.com

I just returned from SEMA, great convention for the enthusiast. I found a bunch of new products. Will keep you guys updated when they release.

 

Tires size used on my 17,7 +40 test fitment were 215/40/17 Kumho Ecsta 712's.

18,7.5 +45: used Yokohama Paradas 215/35/18

If the proper offset is used, I would reccommend a 215/40 on a 17" and a 225/35 for the 18's. This is closest to the MP5's stock wheel and tire O.D. I know the MP3 uses a 205/45, but that's them. I would still use these sizes on the MP3.

If I were to get another set of 7.5's I'd get +48's or +50's for sure and run a 225/35/18 Parada.

Good luck, Rishie
Automotive R & D
Milpitas, CA.

 

hehe, I don't understand what you are talking about

I undertand what 215/40/17 means but this 17,7 +40 notation is alien to myself. Is there a webpage available that explains this notation clearly and with diagrams possibly?

All I want to know is what size tires to get with either 17" or 18" wheels and whether or not they will rub on the fenders using the stack springs. Anything more will just blow my mind

 

the 17 7 40 refer to the wheel diameter (inches), width (inches) and offset (mm). unfortunately all this info is relevant too for getting an aftermarket wheel/tire combo that doesn't rub. for example a higher positive offset brings the wheel in closer to the car to avoid the outside fender lip, but at the same time moves the wheel closer to some inside suspension components, so you can avoid hitting on one side, just to hit on the other.

it also matters if the car is lowered.

getting the right wheel/tire/lowering combo is a nontrivial exercise, and can involve a lot of expensive mistakes. and it really helps when others share their good and bad experience, like rishie here. thanks guy.

 

Thank you gentlemen for the warm welcome.

I've been around the Ford Probe since the inception of BAPOC. I stay in the backlight though as I do not like a lot of people to know about my cars, and steal my ideas. My highschool mate, Eddie WU helped to start BAPOC back in the day, I think '94 or so.

I work with Tirerack wholesale quite extensively and is where I received my SSR GT1's in 18,7.5 with a +45mm offset. They are great, but I do not reccommend going with their reccommendations. You would be better off asking consumers what their experience has been with aftermarket wheels.

I am TELLING you guys to PM me if you want assurance that **** will work. Tirerack suggested the 45 offset and it rubs, that's like over 2G's down the drain in my opinion. PLUS all the retail sales guys are newbies, whereas the wholesale guys are veterans. I help them out a lot when it comes to fitments as well, because I don't have patience or assurance in their rec's all the time.

Don't get me wrong, Tirerack is a great company and do really good work, but they only know what they're computer tells them.

THE USABLE TIRE SIZE IS DEPENDENT ON THE WIDTH AS WELL AS THE OFFSET. If the offset is to low, like +40 as oppoosed to +45 on a 17", 7" then you will be forced to use a 205/40 or 45/17, but if you get the 7" with a +45 you can use a 215/40/17 which is the ideal. The reason being that the wheel will not sit as close to the fender, therefore allowing more clearance for a wider tire.

I don't expect you guys to be able to visualize all this, so I want you all to know that I like setting up cars and giving accurate information. It gives me internal gratification that I know what the hell I'm talking about based on my experiences. I test fit all these wheels on my vehicles or my customers vehicles to get all my answers, none of this hypothetical ****.

ANY QUESTIONS ON SPECIFIC WHEEL SIZES AND OFFSETS, please PM or e-mail me autornd@hotmail.com. You don't even have to buy from me, although you will cause I'll get you the best deal with the best consultation. I set up forum pricing and discounts for all active members. CATCH: You must share your knowledge with other owners, no hater ****. If happy with your experience with me, tell me. I like that a lot and will remember it for further discounts. hehe.

Thanks guys, I'm here for ya,

Rishie

WHO RUNS THIS FORUM, TOP DOG? I'd like to PM him so as to discuss what I can offer all you guys in donations and products? Thanks.

 

Check out the wheel offsets post.

I am running 18,7.5 +45 mm offset on my MP5 and I rub with a 215/35/18 tire. I would suggest, in a 7.5" width to go with a +48 or higher. For a 7" width, go with a +44 or higher.

That's the answer to your question, do not go with those wheels. I guarantee that they will rub. I also suggest going with lightweight wheels also, since our cars don't have a lot of power you will notice the difference with added unsprung weight. You are increasing the rotating mass, therefore taking longer to spin the wheels. Kind of like the difference between a standard and lightweight flywheel, but multiplied by four, one for each corner.

Good luck, Rishie

If you want to buy wheels let me know and I'll do the research for you and guarantee the fitment. Not all wheels are made in the odd offset that our cars require. Our cars are a similar fitment to the Prelude, although several application still give incorrect offsets for those vehicles as well.