Increased stance for my 2018 CX5

[Carlo C]

I have used the stock 19x7 wheels for my snow tires and am looking to purchase 19x8.5 wheels for summer tires. I'd like to increase the stance from the stock 225/55/19 tires to 255/50/19 or 265/50/19 if possible. The tire converter and offset converter programs indicate similar overall dimensions and speedometer readings with the exception of the addition 1.5 inches of width. In order to move this width to the outside of the fender well I'm thinking of moving from the stock +45 offset to +35. Has anyone put larger tires on their CX5 and can comment on options? Thanks

[KOPITE]

I'm in a similar boat wrt getting wider tyres on my 2015 CX-5 Akera 2.2 Diesel Auto in South Africa which is equivalent to the GT version in the US. Stock has 225x55x19 Toyo A36's and I'm looking at getting the 255x50x19 which is the only wider tyre I can use to keep as close to standard with a diameter difference of 7mm and within the 10mm of recommended diameter.

I have heard that if you put on the wrong tyre you could damage your gearbox and wear out your gears. Most people seem to be using 255x55x19 and I have also asked the dealer and they don't seem to have a problem with putting on a 255x55x19 profile. I am confused why they would recommend those size tyres that would cause issues with the gearbox down the line.

Our local tyre dealer have actually made me aware of issues that might arise. Anyone here who can comment on the gearbox issue or is there nothing to be concerned about. I will be keeping the stock 7J rim with the 255x50x19 tyres.

Would appreciate your input on the wider tyres i.t.o fuel, warranty, lower control arms, ride quality with a 50 profile.

[zimurg]

http://www.rimsntires.com/specspro.jsp

[KOPITE]

http://www.rimsntires.com/specspro.jsp

Thanks, but most of the info we sort of know already. Wanted other cx-5 drivers with a similar setup to give their input.

[sm1ke]

You should be fine with those specs. I don't own a CX-5, but I did upgrade to wider wheels with a more aggressive offset on my CX-9. The only things to worry about are whether the tires will have contact with the outer fender lining during full suspension travel, and whether or not the inner rim/tire will have any contact with the brake/suspension components behind the wheel. It looks like the 255/50 and 265/50 setups will be almost 10mm closer to the strut, so I would measure the space between the inner rim and the strut to make sure it clears.

Hope that helps.

[KOPITE]

You should be fine with those specs. I don't own a CX-5, but I did upgrade to wider wheels with a more aggressive offset on my CX-9. The only things to worry about are whether the tires will have contact with the outer fender lining during full suspension travel, and whether or not the inner rim/tire will have any contact with the brake/suspension components behind the wheel. It looks like the 255/50 and 265/50 setups will be almost 10mm closer to the strut, so I would measure the space between the inner rim and the strut to make sure it clears.

Hope that helps.

Ok cool, thanks for the info. Really appreciate your feedback. I did a quick check with a tape measure and I see a clearance gap between tyre and inside fender with about 50-60mm gap, but the wheel is standing straight. I think the biggest issue would be the front as the wider turns would afffect it.

I have the AWD version so not too sure. Is there a website where I can check Mazda wheel sizes, offsets, diameter, etc. I think the ET is 50 with a rim width of 7J. Would the 255 tyre also fit on the 7J rim without any issues.

[KOPITE]

So no one willing to advise or give input on this.

Anyone know what the clearance is behind the rim and strut or brake system

[sm1ke]

Yes there are websites that provide specs. You just have to look for them. Google "mazda 2015 2.2 diesel wheel specs" or something.

As far as clearance, get down there and measure it yourself. Easy enough to get a tape measure and stick it behind the wheel.

[TANKGUNNER]

I'm running 255/50/19's and have no issues at all, performance wise much better handling, very low noise, NITTO MOTIVO's. I drive hard and a lot of highway miles. wheels are 19X8.5 w/35mm offset.

[TANKGUNNER]

You can got to discount tire website and plug your vehicle info in and see what available sizes you can run. Once you know the O.E. tire size diameter you can check the different sizes to see which is closest. Or go a little bigger for the Fat look.

[TANKGUNNER]

Yes there are websites that provide specs. You just have to look for them. Google "mazda 2015 2.2 diesel wheel specs" or something.

As far as clearance, get down there and measure it yourself. Easy enough to get a tape measure and stick it behind the wheel.

Agreed^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[KOPITE]

I'm running 255/50/19's and have no issues at all, performance wise much better handling, very low noise, NITTO MOTIVO's. I drive hard and a lot of highway miles. wheels are 19X8.5 w/35mm offset.

Thanks for the tips and I see you using a 8.5J rim with a 35mm offset. Would the OE 7J rim be too narrow for the 255 or do you think I should rather go for 235 or 245 to keep my stock rim.

Thanks

[Mondo]

I have 245/50/19 Continentals on stock rims... Continental says they fit stock rim width. And if I ever go to 8.5 width rims I can still use these tires (not have to buy both wheels & tires at same time).

[TANKGUNNER]

7J width is a bit narrow,with that tire size you will have a balloon look, 235 would be fine on stock rim. You can also add a 5mm spacer in the rear to get a better stance.

[KOPITE]

Thanks Guys for your input, I'll decide between 235 and 245 then. I think the spacers can push the tyre away from the strut or brakes and also give it a nice wider look.