Rishie's FITMENT RECIPE

[Abqcivic]

Have some ?'s.

Did some research and found that OEM P5 wheels are 16x6, 50 mm offset. Planning on running Rota Slip's 16x7 with a 40mm offset, 225/45/16 Falkens. Also doing Eibach pro-kit. From what I see here it's not going to work. The wife got a nail in a tire 3 months after purchase of the ride. Discount let us use a loaner tire till our new one came in. The loaner size was 225/55/16 on the OEM wheel. Not rubs or any problems of any kind. That is why I think the upper plan should work. Thanks for the any info.

 

[Matthew]

225? how ******* wide was it? those tires must have been like 6 inches tall!

 

[RyanJayG]

put some people in the rear seat and you'll rub over bumps. that is, unless you have a sedan... then you could be ok with that offset, but it could depend on your brand of tire, as some are wider than other brands at the same rated size.

 

[Abqcivic]

put some people in the rear seat and you'll rub over bumps. that is, unless you have a sedan... then you could be ok with that offset, but it could depend on your brand of tire, as some are wider than other brands at the same rated size.

The factory Dunlop's 195/50/16 are 23.5 overall outside diameter. The 225/45/16 Falkens are 23.9. Only gain around 1/2 inch or less. Now with the drop, average around 1.5 inches all the way around, should have close to a tuck with ALITTLE room to spare. Compensate for that with a heavier spring rate. Give it a shot and see how it work out. Thanks

 

[RyanJayG]

I could care less about the diameter, your tire is 3 cm wider, and your offset is really pushing it for a 225 tire.

 

[Matthew]

we dont have mustangs. dont put 225 tires on your car.

 

[hawaiian_msp]

would 18x7.5 +45 with 215/35/18s fit on a msp? I read through all 20 pages of this thread but I still just wanna make sure... thanks! -mike

 

[RyanJayG]

would 18x7.5 +45 with 215/35/18s fit on a msp? I read through all 20 pages of this thread but I still just wanna make sure... thanks! -mike

yes, its exactly what I have. but remember its still VERY VERY close... and I mean, I've never seen a car this close before. I am tucked at all 4 corners.

it truely comes down to tire brand, some are wider than others. My Toyo Proxe 4's are fine, but I've seen BFGoodrich KDW2's and I dont think they would fit, as they are some wide ass tires for 215mm tread

 

[JOS3]

its tucked but it looks h4wt

 

[hawaiian_msp]

yes, its exactly what I have. but remember its still VERY VERY close... and I mean, I've never seen a car this close before. I am tucked at all 4 corners.

it truely comes down to tire brand, some are wider than others. My Toyo Proxe 4's are fine, but I've seen BFGoodrich KDW2's and I dont think they would fit, as they are some wide ass tires for 215mm tread

what about nitto gens?

 

[RyanJayG]

I dont have personal experience with the NeoGens... but I'm sure someone out there can help you to compare them to their old tires or something.

 

[Abqcivic]

we dont have mustangs. dont put 225 tires on your car.

Don't say something stupid if you don't know what your talking about. With the basic laws of ownership, Yes we do have mustangs. Ford owns close to 70% of Mazda. I guess you would say a focus is more along the same baselines. Not to start a flame war but DAMN, think before you speak.

As for wheels Im not looking for pretty, looking for function. Heres how it works.
Wheels:
OEM 16x6 50mm offset. Now 50mm is 1.96" from center of the wheel. With a 6" wheel this means there is 4.96" inside and 1.04" outside. Rota Slip 16x7 40mm offset. 40mm is 1.57" from center and with a 7" wheel you have 5.07" inside and 1.93" outside. Nothing changed inside but you add an inch to the outside hub of the wheel.
Tires:
I understand tires are very vague due to every manufacture having different tolerances. Lets just figure this with standards. A 195/50/16 is a 7.67" contact patch. A 225/45/16 is an 8.85" contact patch. There is a 1 1/8th" difference that is adjusted for by the inch added to the outside of the wheel listed above.
As for outside diameter and a tires being round, with the change in size you can figure it as 1/2 of the total size. Example-195/50/16 are 23.5 total outside diameter; 225/45/16 are 23.9 from the tires I listed at the earlier post. There is .4 difference between the two. This effects the top and bottom of the tires because it rotates on an axis, so now your looking at .2" or 1/4 inch being larger that is going to come in contact with any part of the car because the other half is on the opposite side. Simple enough.

 

[RyanJayG]

Don't say something stupid if you don't know what your talking about. With the basic laws of ownership, Yes we do have mustangs. Ford owns close to 70% of Mazda. I guess you would say a focus is more along the same baselines. Not to start a flame war but DAMN, think before you speak.

As for wheels Im not looking for pretty, looking for function. Heres how it works.
Wheels:
OEM 16x6 50mm offset. Now 50mm is 1.96" from center of the wheel. With a 6" wheel this means there is 4.96" inside and 1.04" outside. Rota Slip 16x7 40mm offset. 40mm is 1.57" from center and with a 7" wheel you have 5.07" inside and 1.93" outside. Nothing changed inside but you add an inch to the outside hub of the wheel.
Tires:
I understand tires are very vague due to every manufacture having different tolerances. Lets just figure this with standards. A 195/50/16 is a 7.67" contact patch. A 225/45/16 is an 8.85" contact patch. There is a 1 1/8th" difference that is adjusted for by the inch added to the outside of the wheel listed above.
As for outside diameter and a tires being round, with the change in size you can figure it as 1/2 of the total size. Example-195/50/16 are 23.5 total outside diameter; 225/45/16 are 23.9 from the tires I listed at the earlier post. There is .4 difference between the two. This effects the top and bottom of the tires because it rotates on an axis, so now your looking at .2" or 1/4 inch being larger that is going to come in contact with any part of the car because the other half is on the opposite side. Simple enough.

no one here needs a math lesson, least of all me. Your math is correct, but I gurantee you a 225 tire on a 7" wheel with a +40 offset WILL hit. it will hit the FENDER, not the strut

and you are wrong about Ford, they only own 30% of Mazda. this has been discussed a million times. though sadly that is all that is needed to have a controlling interest in Mazda

 

[RyanJayG]

on a side note, a 215 tire would fit, if you have a sedan depending on brand of tire, but on a 7" wheel I wouldn't want anything bigger than a 215 anyways. a tire that is too wide will kill handling because your sidewall will flex and give.

 

[Abqcivic]

no one here needs a math lesson, least of all me. Your math is correct, but I gurantee you a 225 tire on a 7" wheel with a +40 offset WILL hit. it will hit the FENDER, not the strut

No lessons here, just the basic mechanics of suspension and wheels. With the 1st item out of the way, lets move on. My P5 has a wheel well gap of around 3.5-4" and the tires have a fender over-hang close to 1.5-2". This is standard on most P5's Ive dealt with. Do a drop of lets say 2". That leaves you a 1.5" gap. Now add the 1/4" from the tires and we are at 1.25". Also have to add in the loss of over-hang from the fender. With the 1" outside added by the wheel you've cut the 1.5-2" down to .5-1". Not much room but now the movement of the suspension takes control. Most suspension moves and makes negative camber as it travels. The .5" will grow as the suspension moves up, thus preventing problems. Sorry to be an ass, but I hate it when assumptions are taken over knowledge. Lots of assumptions Ive seen here.

 

[Matthew]

i never said it wouldnt work. i dont care about that. i was saying it will look retarded.

 

[RyanJayG]

No lessons here, just the basic mechanics of suspension and wheels. With the 1st item out of the way, lets move on. My P5 has a wheel well gap of around 3.5-4" and the tires have a fender over-hang close to 1.5-2". This is standard on most P5's Ive dealt with. Do a drop of lets say 2". That leaves you a 1.5" gap. Now add the 1/4" from the tires and we are at 1.25". Also have to add in the loss of over-hang from the fender. With the 1" outside added by the wheel you've cut the 1.5-2" down to .5-1". Not much room but now the movement of the suspension takes control. Most suspension moves and makes negative camber as it travels. The .5" will grow as the suspension moves up, thus preventing problems. Sorry to be an ass, but I hate it when assumptions are taken over knowledge. Lots of assumptions Ive seen here.

how about this, look at my car... its in my sig. I AM VERY dropped, and I am tucked at all 4 corners. I have 215, 35 x 18 tires, 7.5" width, +45 offset. and I cannot fit more than 5 pieces of paper between my fender and my tire. and I have even rolled my fender.

now tell me how your 225 tire will fit with 1 mm higher offset than what I have, not to mention the fact you will have a taller, slightly more flexable sidewall (read: expanding)

its been proven that I have pushed the VERY limit as to what will fit offset/tire size wise.

go ahead and buy it, I hope it works for you, but this whole thread is here for a reason, its your choice to ignore it or not.

 

[RyanJayG]

oh, and our setup does NOT change camber as it travels upwards... atleast not in the rear... this has been proven by countless alignments. the toe however goes way out.

 

[Matthew]

he knows best ryan, didnt you know youre a dumbass?

 

[Abqcivic]

i never said it wouldnt work. i dont care about that. i was saying it will look retarded.

But it's the same to me as everyone running 17-18" wheels. No performance gain. Most of the time it kills your gearing. I'd much rather have a wider tire patch than a taller tire.