Normal operating temperatures

I have a 2004 series I with 67k on the current motor I have been using a bluetooth obd dongle connected to my phone to read coolant temperatures among other things. I have found that my temperatures seem a little high as high as 208 F in normal driving and if i let the rpms go up to 8k for a few seconds ive seen temps as high as 221 F and during a bit of playing around i saw 224.5 F which scares me a bit since i know its not particularly difficult to warp a rotor housing. Only things i have done to the car are the throttle body bypass and i am running 5w30 instead of the usual 5w20. ambient temps are between 82 F and 92 F but, seeing as i live in the central valley in California it could get as high as 110 F later in the year. I have checked my coolant and oil levels and do so regularly I also have never let it overheat when i see a spike i slow until the temps drop to regular levels. I'm wondering if there are any simple mods i could do to drive the temps down a bit as i'm worried that in the heat of summer it could overheat in traffic.